<?xml version="1.0" encoding="UTF-8"?>
<!-- XBRL document created by Data Communique, Inc. -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:abflexbdfd-20150813="http://abflexbdfd-20150813/20150813" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/DocumentDocumentandEntityInformation" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#DocumentDocumentandEntityInformation"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskReturnDetailData" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#RiskReturnDetailData"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/DDDD" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#DDDD"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/PerformanceTableDataDDDD" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#PerformanceTableDataDDDD"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/OperatingExpensesDataDDDD" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#OperatingExpensesDataDDDD"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/PerformanceTableDataBBBB" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#PerformanceTableDataBBBB"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/BarChartDataBBBB" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#BarChartDataBBBB"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/BarChartDataCCCC" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#BarChartDataCCCC"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/PerformanceTableDataCCCC" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#PerformanceTableDataCCCC"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/ExpenseExampleNoRedemptionDDDD" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#ExpenseExampleNoRedemptionDDDD"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/BarChartDataDDDD" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#BarChartDataDDDD"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/BBBB" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#BBBB"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/OperatingExpensesDataBBBB" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#OperatingExpensesDataBBBB"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/ExpenseExampleBBBB" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#ExpenseExampleBBBB"/>
  <link:roleRef roleURI="http://abflexbdfd-20150813/role/CCCC" xlink:type="simple" xlink:href="abflexbdfd-20150813.xsd#CCCC"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/DocumentDocumentandEntityInformation">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnAbstract" xlink:label="RiskReturnAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="RiskReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="DDDDMember" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentType" xlink:label="dei_DocumentType"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_DocumentType" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_DocumentPeriodEndDate" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_EntityRegistrantName" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_EntityCentralIndexKey" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_AmendmentFlag" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_TradingSymbol" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentCreationDate" xlink:label="dei_DocumentCreationDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_DocumentCreationDate" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentEffectiveDate" xlink:label="dei_DocumentEffectiveDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="dei_DocumentEffectiveDate" use="optional" order="10.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/DDDD">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnAbstract" xlink:label="RiskReturnAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="RiskReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DocumentInformationDocumentAxis" xlink:to="DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="DDDDMember" use="optional" order="102.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000032923Member" use="optional" order="104.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_SupplementTextBlock" xlink:label="SupplementTextBlock" xlink:title="SupplementTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="SupplementTextBlock" xlink:title="definition: RiskReturnAbstract to SupplementTextBlock" order="78.5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveHeading" xlink:label="ObjectiveHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveHeading" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectivePrimaryTextBlock" xlink:label="ObjectivePrimaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectivePrimaryTextBlock" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseHeading" xlink:label="ExpenseHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseHeading" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseNarrativeTextBlock" xlink:label="ExpenseNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseNarrativeTextBlock" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesCaption" xlink:label="ShareholderFeesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesCaption" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesCaption" xlink:label="OperatingExpensesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="OperatingExpensesCaption" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNarrativeTextBlock" xlink:label="ExpenseExampleNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNarrativeTextBlock" use="optional" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverHeading" xlink:label="PortfolioTurnoverHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverHeading" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverTextBlock" xlink:label="PortfolioTurnoverTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverTextBlock" use="optional" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyHeading" xlink:label="StrategyHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyHeading" use="optional" order="26.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyNarrativeTextBlock" xlink:label="StrategyNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyNarrativeTextBlock" use="optional" order="27.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskHeading" xlink:label="RiskHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskHeading" use="optional" order="28.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskNarrativeTextBlock" xlink:label="RiskNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskNarrativeTextBlock" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartAndPerformanceTableHeading" xlink:label="BarChartAndPerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartAndPerformanceTableHeading" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceNarrativeTextBlock" xlink:label="PerformanceNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceNarrativeTextBlock" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartHeading" xlink:label="BarChartHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartHeading" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartClosingTextBlock" xlink:label="BarChartClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartClosingTextBlock" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableHeading" xlink:label="PerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableHeading" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableClosingTextBlock" xlink:label="PerformanceTableClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableClosingTextBlock" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableFootnotesTextBlock" xlink:label="PerformanceTableFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableFootnotesTextBlock" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_MarketIndexPerformanceTableTextBlock" xlink:label="MarketIndexPerformanceTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="MarketIndexPerformanceTableTextBlock" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableTextBlock" xlink:label="PerformanceTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableTextBlock" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableNarrativeTextBlock" xlink:label="PerformanceTableNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableNarrativeTextBlock" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartFootnotesTextBlock" xlink:label="BarChartFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartFootnotesTextBlock" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartTableTextBlock" xlink:label="BarChartTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartTableTextBlock" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartNarrativeTextBlock" xlink:label="BarChartNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartNarrativeTextBlock" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskClosingTextBlock" xlink:label="RiskClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskClosingTextBlock" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskFootnotesTextBlock" xlink:label="RiskFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskFootnotesTextBlock" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleClosingTextBlock" xlink:label="ExpenseExampleClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleClosingTextBlock" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleFootnotesTextBlock" xlink:label="ExpenseExampleFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleFootnotesTextBlock" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionTableTextBlock" xlink:label="ExpenseExampleNoRedemptionTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionTableTextBlock" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionByYearCaption" xlink:label="ExpenseExampleNoRedemptionByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionByYearCaption" use="optional" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionNarrativeTextBlock" xlink:label="ExpenseExampleNoRedemptionNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionNarrativeTextBlock" use="optional" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleWithRedemptionTableTextBlock" xlink:label="ExpenseExampleWithRedemptionTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleWithRedemptionTableTextBlock" use="optional" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearCaption" xlink:label="ExpenseExampleByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearCaption" use="optional" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearHeading" xlink:label="ExpenseExampleByYearHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearHeading" use="optional" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleHeading" xlink:label="ExpenseExampleHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleHeading" use="optional" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesRangeOfExchangeFeesTextBlock" xlink:label="ExpensesRangeOfExchangeFeesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesRangeOfExchangeFeesTextBlock" use="optional" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesDeferredChargesTextBlock" xlink:label="ExpensesDeferredChargesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesDeferredChargesTextBlock" use="optional" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseFootnotesTextBlock" xlink:label="ExpenseFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseFootnotesTextBlock" use="optional" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualFundOperatingExpensesTableTextBlock" xlink:label="AnnualFundOperatingExpensesTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualFundOperatingExpensesTableTextBlock" use="optional" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesTableTextBlock" xlink:label="ShareholderFeesTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesTableTextBlock" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveSecondaryTextBlock" xlink:label="ObjectiveSecondaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveSecondaryTextBlock" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnHeading" xlink:label="RiskReturnHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskReturnHeading" use="optional" order="1.5"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/BBBB">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnAbstract" xlink:label="RiskReturnAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="RiskReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DocumentInformationDocumentAxis" xlink:to="DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="BBBBMember" use="optional" order="103.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000032923Member" use="optional" order="104.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_SupplementTextBlock" xlink:label="SupplementTextBlock" xlink:title="SupplementTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="SupplementTextBlock" xlink:title="definition: RiskReturnAbstract to SupplementTextBlock" order="78.5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveHeading" xlink:label="ObjectiveHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveHeading" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectivePrimaryTextBlock" xlink:label="ObjectivePrimaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectivePrimaryTextBlock" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseHeading" xlink:label="ExpenseHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseHeading" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseNarrativeTextBlock" xlink:label="ExpenseNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseNarrativeTextBlock" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesCaption" xlink:label="ShareholderFeesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesCaption" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesCaption" xlink:label="OperatingExpensesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="OperatingExpensesCaption" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNarrativeTextBlock" xlink:label="ExpenseExampleNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNarrativeTextBlock" use="optional" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverHeading" xlink:label="PortfolioTurnoverHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverHeading" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverTextBlock" xlink:label="PortfolioTurnoverTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverTextBlock" use="optional" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyHeading" xlink:label="StrategyHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyHeading" use="optional" order="26.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyNarrativeTextBlock" xlink:label="StrategyNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyNarrativeTextBlock" use="optional" order="27.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskHeading" xlink:label="RiskHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskHeading" use="optional" order="28.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskNarrativeTextBlock" xlink:label="RiskNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskNarrativeTextBlock" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartAndPerformanceTableHeading" xlink:label="BarChartAndPerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartAndPerformanceTableHeading" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceNarrativeTextBlock" xlink:label="PerformanceNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceNarrativeTextBlock" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartHeading" xlink:label="BarChartHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartHeading" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartClosingTextBlock" xlink:label="BarChartClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartClosingTextBlock" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableHeading" xlink:label="PerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableHeading" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableClosingTextBlock" xlink:label="PerformanceTableClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableClosingTextBlock" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableFootnotesTextBlock" xlink:label="PerformanceTableFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableFootnotesTextBlock" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_MarketIndexPerformanceTableTextBlock" xlink:label="MarketIndexPerformanceTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="MarketIndexPerformanceTableTextBlock" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableTextBlock" xlink:label="PerformanceTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableTextBlock" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableNarrativeTextBlock" xlink:label="PerformanceTableNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableNarrativeTextBlock" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartFootnotesTextBlock" xlink:label="BarChartFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartFootnotesTextBlock" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartTableTextBlock" xlink:label="BarChartTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartTableTextBlock" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartNarrativeTextBlock" xlink:label="BarChartNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartNarrativeTextBlock" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskClosingTextBlock" xlink:label="RiskClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskClosingTextBlock" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskFootnotesTextBlock" xlink:label="RiskFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskFootnotesTextBlock" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleClosingTextBlock" xlink:label="ExpenseExampleClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleClosingTextBlock" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleFootnotesTextBlock" xlink:label="ExpenseExampleFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleFootnotesTextBlock" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionTableTextBlock" xlink:label="ExpenseExampleNoRedemptionTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionTableTextBlock" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionByYearCaption" xlink:label="ExpenseExampleNoRedemptionByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionByYearCaption" use="optional" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionNarrativeTextBlock" xlink:label="ExpenseExampleNoRedemptionNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionNarrativeTextBlock" use="optional" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleWithRedemptionTableTextBlock" xlink:label="ExpenseExampleWithRedemptionTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleWithRedemptionTableTextBlock" use="optional" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearCaption" xlink:label="ExpenseExampleByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearCaption" use="optional" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearHeading" xlink:label="ExpenseExampleByYearHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearHeading" use="optional" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleHeading" xlink:label="ExpenseExampleHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleHeading" use="optional" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesRangeOfExchangeFeesTextBlock" xlink:label="ExpensesRangeOfExchangeFeesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesRangeOfExchangeFeesTextBlock" use="optional" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesDeferredChargesTextBlock" xlink:label="ExpensesDeferredChargesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesDeferredChargesTextBlock" use="optional" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseFootnotesTextBlock" xlink:label="ExpenseFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseFootnotesTextBlock" use="optional" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualFundOperatingExpensesTableTextBlock" xlink:label="AnnualFundOperatingExpensesTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualFundOperatingExpensesTableTextBlock" use="optional" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesTableTextBlock" xlink:label="ShareholderFeesTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesTableTextBlock" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveSecondaryTextBlock" xlink:label="ObjectiveSecondaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveSecondaryTextBlock" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnHeading" xlink:label="RiskReturnHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskReturnHeading" use="optional" order="1.5"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/PerformanceTableDataDDDD">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="DDDDMember" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember" xlink:title="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" xlink:title="definition: DocumentDomain to BBBBMember" order="7.1"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember" xlink:title="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" xlink:title="definition: DocumentDomain to CCCCMember" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureAxis" xlink:label="PerformanceMeasureAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="PerformanceMeasureAxis" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnAbstract" xlink:label="AverageAnnualReturnAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="AverageAnnualReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear01" xlink:label="AverageAnnualReturnYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear01" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear05" xlink:label="AverageAnnualReturnYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear05" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear10" xlink:label="AverageAnnualReturnYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear10" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnSinceInception" xlink:label="AverageAnnualReturnSinceInception"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnSinceInception" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnInceptionDate" xlink:label="AverageAnnualReturnInceptionDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnInceptionDate" use="optional" order="26.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/PerformanceTableDataBBBB">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember" xlink:title="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" xlink:title="definition: DocumentDomain to BBBBMember" order="7.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureAxis" xlink:label="PerformanceMeasureAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="PerformanceMeasureAxis" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AfterTaxesOnDistributionsAndSalesMember" xlink:label="AfterTaxesOnDistributionsAndSalesMember" xlink:title="AfterTaxesOnDistributionsAndSalesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="AfterTaxesOnDistributionsAndSalesMember" xlink:title="definition: PerformanceMeasureDomain to AfterTaxesOnDistributionsAndSalesMember" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AfterTaxesOnDistributionsMember" xlink:label="AfterTaxesOnDistributionsMember" xlink:title="AfterTaxesOnDistributionsMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="AfterTaxesOnDistributionsMember" xlink:title="definition: PerformanceMeasureDomain to AfterTaxesOnDistributionsMember" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkConsumerPriceIndexBBBBMember" xlink:label="benchmarkConsumerPriceIndexBBBBMember" xlink:title="benchmarkConsumerPriceIndexBBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="benchmarkConsumerPriceIndexBBBBMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkConsumerPriceIndexBBBBMember" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkBarclaysUSTIPSBBBBMember" xlink:label="benchmarkBarclaysUSTIPSBBBBMember" xlink:title="benchmarkBarclaysUSTIPSBBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="benchmarkBarclaysUSTIPSBBBBMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkBarclaysUSTIPSBBBBMember" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkMSCIWorldIndxBBBBMember" xlink:label="benchmarkMSCIWorldIndxBBBBMember" xlink:title="benchmarkMSCIWorldIndxBBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="benchmarkMSCIWorldIndxBBBBMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkMSCIWorldIndxBBBBMember" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnAbstract" xlink:label="AverageAnnualReturnAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="AverageAnnualReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear01" xlink:label="AverageAnnualReturnYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear01" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear05" xlink:label="AverageAnnualReturnYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear05" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear10" xlink:label="AverageAnnualReturnYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear10" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnSinceInception" xlink:label="AverageAnnualReturnSinceInception"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnSinceInception" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnInceptionDate" xlink:label="AverageAnnualReturnInceptionDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnInceptionDate" use="optional" order="26.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/PerformanceTableDataCCCC">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember" xlink:title="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" xlink:title="definition: DocumentDomain to CCCCMember" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureAxis" xlink:label="PerformanceMeasureAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="PerformanceMeasureAxis" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkConsumerPriceIndexCCCCMember" xlink:label="benchmarkConsumerPriceIndexCCCCMember" xlink:title="benchmarkConsumerPriceIndexCCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="benchmarkConsumerPriceIndexCCCCMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkConsumerPriceIndexCCCCMember" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkBarclaysUSTIPSCCCCMember" xlink:label="benchmarkBarclaysUSTIPSCCCCMember" xlink:title="benchmarkBarclaysUSTIPSCCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="benchmarkBarclaysUSTIPSCCCCMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkBarclaysUSTIPSCCCCMember" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkMSCIWorldIndxCCCCMember" xlink:label="benchmarkMSCIWorldIndxCCCCMember" xlink:title="benchmarkMSCIWorldIndxCCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain_2" xlink:to="benchmarkMSCIWorldIndxCCCCMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkMSCIWorldIndxCCCCMember" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnAbstract" xlink:label="AverageAnnualReturnAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="AverageAnnualReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear01" xlink:label="AverageAnnualReturnYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear01" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear05" xlink:label="AverageAnnualReturnYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear05" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear10" xlink:label="AverageAnnualReturnYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnYear10" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnSinceInception" xlink:label="AverageAnnualReturnSinceInception"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnSinceInception" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnInceptionDate" xlink:label="AverageAnnualReturnInceptionDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AverageAnnualReturnAbstract" xlink:to="AverageAnnualReturnInceptionDate" use="optional" order="26.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/OperatingExpensesDataDDDD">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="DDDDMember" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember" xlink:title="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" xlink:title="definition: DocumentDomain to BBBBMember" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember" xlink:title="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" xlink:title="definition: DocumentDomain to CCCCMember" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="OperatingExpensesAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesColumnName" xlink:label="OperatingExpensesColumnName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="OperatingExpensesColumnName" use="optional" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ManagementFeesOverAssets" xlink:label="ManagementFeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="ManagementFeesOverAssets" use="optional" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_DistributionAndService12b1FeesOverAssets" xlink:label="DistributionAndService12b1FeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="DistributionAndService12b1FeesOverAssets" use="optional" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_DistributionOrSimilarNon12b1FeesOverAssets" xlink:label="DistributionOrSimilarNon12b1FeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="DistributionOrSimilarNon12b1FeesOverAssets" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component1OtherExpensesOverAssets" xlink:label="Component1OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="Component1OtherExpensesOverAssets" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component2OtherExpensesOverAssets" xlink:label="Component2OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="Component2OtherExpensesOverAssets" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component3OtherExpensesOverAssets" xlink:label="Component3OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="Component3OtherExpensesOverAssets" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OtherExpensesOverAssets" xlink:label="OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="OtherExpensesOverAssets" use="optional" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AcquiredFundFeesAndExpensesOverAssets" xlink:label="AcquiredFundFeesAndExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="AcquiredFundFeesAndExpensesOverAssets" use="optional" order="26.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesOverAssets" xlink:label="ExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="ExpensesOverAssets" use="optional" order="27.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssets" xlink:label="FeeWaiverOrReimbursementOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="FeeWaiverOrReimbursementOverAssets" use="optional" order="28.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_NetExpensesOverAssets" xlink:label="NetExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="NetExpensesOverAssets" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination" xlink:label="FeeWaiverOrReimbursementOverAssetsDateOfTermination"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="FeeWaiverOrReimbursementOverAssetsDateOfTermination" use="optional" order="30.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/ExpenseExampleNoRedemptionDDDD">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="DDDDMember" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember" xlink:title="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" xlink:title="definition: DocumentDomain to BBBBMember" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember" xlink:title="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" xlink:title="definition: DocumentDomain to CCCCMember" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionAbstract" xlink:label="ExpenseExampleNoRedemptionAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ExpenseExampleNoRedemptionAbstract" xlink:to="ProspectusTable" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear01" xlink:label="ExpenseExampleNoRedemptionYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleNoRedemptionAbstract" xlink:to="ExpenseExampleNoRedemptionYear01" use="optional" priority="1" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear03" xlink:label="ExpenseExampleNoRedemptionYear03"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleNoRedemptionAbstract" xlink:to="ExpenseExampleNoRedemptionYear03" use="optional" priority="1" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear05" xlink:label="ExpenseExampleNoRedemptionYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleNoRedemptionAbstract" xlink:to="ExpenseExampleNoRedemptionYear05" use="optional" priority="1" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear10" xlink:label="ExpenseExampleNoRedemptionYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleNoRedemptionAbstract" xlink:to="ExpenseExampleNoRedemptionYear10" use="optional" priority="1" order="20.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/BarChartDataDDDD">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="DDDDMember" use="optional" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember" xlink:title="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" xlink:title="definition: DocumentDomain to BBBBMember" order="11.1"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember" xlink:title="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" xlink:title="definition: DocumentDomain to CCCCMember" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartTableAbstract" xlink:label="BarChartTableAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="BarChartTableAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnCaption" xlink:label="AnnualReturnCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnCaption" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnColumnName" xlink:label="AnnualReturnColumnName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnColumnName" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnInceptionDate" xlink:label="AnnualReturnInceptionDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnInceptionDate" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1990" xlink:label="AnnualReturn1990"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1990" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1991" xlink:label="AnnualReturn1991"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1991" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1992" xlink:label="AnnualReturn1992"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1992" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1993" xlink:label="AnnualReturn1993"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1993" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1994" xlink:label="AnnualReturn1994"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1994" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1995" xlink:label="AnnualReturn1995"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1995" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1996" xlink:label="AnnualReturn1996"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1996" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1997" xlink:label="AnnualReturn1997"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1997" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1998" xlink:label="AnnualReturn1998"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1998" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1999" xlink:label="AnnualReturn1999"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1999" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2000" xlink:label="AnnualReturn2000"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2000" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2001" xlink:label="AnnualReturn2001"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2001" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2002" xlink:label="AnnualReturn2002"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2002" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2003" xlink:label="AnnualReturn2003"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2003" use="optional" order="45.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2004" xlink:label="AnnualReturn2004"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2004" use="optional" order="46.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2005" xlink:label="AnnualReturn2005"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2005" use="optional" order="47.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2006" xlink:label="AnnualReturn2006"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2006" use="optional" order="48.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2007" xlink:label="AnnualReturn2007"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2007" use="optional" order="49.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2008" xlink:label="AnnualReturn2008"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2008" use="optional" order="50.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2009" xlink:label="AnnualReturn2009"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2009" use="optional" order="51.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2010" xlink:label="AnnualReturn2010"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2010" use="optional" order="52.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2011" xlink:label="AnnualReturn2011"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2011" use="optional" order="53.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2012" xlink:label="AnnualReturn2012"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2012" use="optional" order="54.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2013" xlink:label="AnnualReturn2013"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2013" use="optional" order="55.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2014" xlink:label="AnnualReturn2014"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2014" use="optional" order="56.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/BarChartDataBBBB">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember" xlink:title="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" xlink:title="definition: DocumentDomain to BBBBMember" order="11.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartTableAbstract" xlink:label="BarChartTableAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="BarChartTableAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnCaption" xlink:label="AnnualReturnCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnCaption" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnColumnName" xlink:label="AnnualReturnColumnName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnColumnName" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnInceptionDate" xlink:label="AnnualReturnInceptionDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnInceptionDate" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1990" xlink:label="AnnualReturn1990"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1990" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1991" xlink:label="AnnualReturn1991"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1991" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1992" xlink:label="AnnualReturn1992"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1992" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1993" xlink:label="AnnualReturn1993"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1993" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1994" xlink:label="AnnualReturn1994"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1994" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1995" xlink:label="AnnualReturn1995"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1995" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1996" xlink:label="AnnualReturn1996"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1996" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1997" xlink:label="AnnualReturn1997"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1997" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1998" xlink:label="AnnualReturn1998"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1998" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1999" xlink:label="AnnualReturn1999"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1999" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2000" xlink:label="AnnualReturn2000"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2000" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2001" xlink:label="AnnualReturn2001"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2001" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2002" xlink:label="AnnualReturn2002"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2002" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2003" xlink:label="AnnualReturn2003"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2003" use="optional" order="45.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2004" xlink:label="AnnualReturn2004"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2004" use="optional" order="46.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2005" xlink:label="AnnualReturn2005"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2005" use="optional" order="47.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2006" xlink:label="AnnualReturn2006"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2006" use="optional" order="48.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2007" xlink:label="AnnualReturn2007"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2007" use="optional" order="49.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2008" xlink:label="AnnualReturn2008"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2008" use="optional" order="50.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2009" xlink:label="AnnualReturn2009"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2009" use="optional" order="51.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2010" xlink:label="AnnualReturn2010"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2010" use="optional" order="52.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2011" xlink:label="AnnualReturn2011"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2011" use="optional" order="53.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2012" xlink:label="AnnualReturn2012"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2012" use="optional" order="54.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2013" xlink:label="AnnualReturn2013"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2013" use="optional" order="55.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2014" xlink:label="AnnualReturn2014"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2014" use="optional" order="56.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/BarChartDataCCCC">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember" xlink:title="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="CCCCMember" xlink:title="definition: DocumentDomain to CCCCMember" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="S000032923Member" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartTableAbstract" xlink:label="BarChartTableAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="BarChartTableAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnCaption" xlink:label="AnnualReturnCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnCaption" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnColumnName" xlink:label="AnnualReturnColumnName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnColumnName" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturnInceptionDate" xlink:label="AnnualReturnInceptionDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturnInceptionDate" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1990" xlink:label="AnnualReturn1990"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1990" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1991" xlink:label="AnnualReturn1991"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1991" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1992" xlink:label="AnnualReturn1992"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1992" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1993" xlink:label="AnnualReturn1993"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1993" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1994" xlink:label="AnnualReturn1994"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1994" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1995" xlink:label="AnnualReturn1995"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1995" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1996" xlink:label="AnnualReturn1996"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1996" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1997" xlink:label="AnnualReturn1997"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1997" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1998" xlink:label="AnnualReturn1998"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1998" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn1999" xlink:label="AnnualReturn1999"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn1999" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2000" xlink:label="AnnualReturn2000"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2000" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2001" xlink:label="AnnualReturn2001"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2001" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2002" xlink:label="AnnualReturn2002"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2002" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2003" xlink:label="AnnualReturn2003"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2003" use="optional" order="45.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2004" xlink:label="AnnualReturn2004"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2004" use="optional" order="46.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2005" xlink:label="AnnualReturn2005"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2005" use="optional" order="47.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2006" xlink:label="AnnualReturn2006"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2006" use="optional" order="48.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2007" xlink:label="AnnualReturn2007"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2007" use="optional" order="49.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2008" xlink:label="AnnualReturn2008"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2008" use="optional" order="50.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2009" xlink:label="AnnualReturn2009"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2009" use="optional" order="51.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2010" xlink:label="AnnualReturn2010"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2010" use="optional" order="52.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2011" xlink:label="AnnualReturn2011"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2011" use="optional" order="53.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2012" xlink:label="AnnualReturn2012"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2012" use="optional" order="54.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2013" xlink:label="AnnualReturn2013"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2013" use="optional" order="55.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2014" xlink:label="AnnualReturn2014"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BarChartTableAbstract" xlink:to="AnnualReturn2014" use="optional" order="56.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/OperatingExpensesDataBBBB">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="OperatingExpensesAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesColumnName" xlink:label="OperatingExpensesColumnName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="OperatingExpensesColumnName" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ManagementFeesOverAssets" xlink:label="ManagementFeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="ManagementFeesOverAssets" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_DistributionAndService12b1FeesOverAssets" xlink:label="DistributionAndService12b1FeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="DistributionAndService12b1FeesOverAssets" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_DistributionOrSimilarNon12b1FeesOverAssets" xlink:label="DistributionOrSimilarNon12b1FeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="DistributionOrSimilarNon12b1FeesOverAssets" use="optional" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component1OtherExpensesOverAssets" xlink:label="Component1OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="Component1OtherExpensesOverAssets" use="optional" order="26.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component2OtherExpensesOverAssets" xlink:label="Component2OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="Component2OtherExpensesOverAssets" use="optional" order="27.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component3OtherExpensesOverAssets" xlink:label="Component3OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="Component3OtherExpensesOverAssets" use="optional" order="28.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OtherExpensesOverAssets" xlink:label="OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="OtherExpensesOverAssets" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AcquiredFundFeesAndExpensesOverAssets" xlink:label="AcquiredFundFeesAndExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="AcquiredFundFeesAndExpensesOverAssets" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesOverAssets" xlink:label="ExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="ExpensesOverAssets" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssets" xlink:label="FeeWaiverOrReimbursementOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="FeeWaiverOrReimbursementOverAssets" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_NetExpensesOverAssets" xlink:label="NetExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="NetExpensesOverAssets" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination" xlink:label="FeeWaiverOrReimbursementOverAssetsDateOfTermination"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="OperatingExpensesAbstract" xlink:to="FeeWaiverOrReimbursementOverAssetsDateOfTermination" use="optional" order="34.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/ExpenseExampleBBBB">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="dei_DocumentDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_DocumentInformationDocumentAxis" xlink:to="dei_DocumentDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_DocumentDomain" xlink:to="BBBBMember" use="optional" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="dei_LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain_2"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain_2" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleAbstract" xlink:label="ExpenseExampleAbstract"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ExpenseExampleAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearColumnName" xlink:label="ExpenseExampleByYearColumnName"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleAbstract" xlink:to="ExpenseExampleByYearColumnName" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear01" xlink:label="ExpenseExampleYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleAbstract" xlink:to="ExpenseExampleYear01" use="optional" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear03" xlink:label="ExpenseExampleYear03"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleAbstract" xlink:to="ExpenseExampleYear03" use="optional" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear05" xlink:label="ExpenseExampleYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleAbstract" xlink:to="ExpenseExampleYear05" use="optional" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear10" xlink:label="ExpenseExampleYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ExpenseExampleAbstract" xlink:to="ExpenseExampleYear10" use="optional" order="17.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://abflexbdfd-20150813/role/CCCC">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnAbstract" xlink:label="RiskReturnAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="RiskReturnAbstract" xlink:to="ProspectusTable" use="optional" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="DocumentInformationDocumentAxis" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DocumentInformationDocumentAxis" xlink:to="DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="CCCCMember" use="optional" order="104.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="LegalEntityAxis" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000032923Member" use="optional" order="104.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_SupplementTextBlock" xlink:label="SupplementTextBlock" xlink:title="SupplementTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="SupplementTextBlock" xlink:title="definition: RiskReturnAbstract to SupplementTextBlock" order="78.5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveHeading" xlink:label="ObjectiveHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveHeading" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectivePrimaryTextBlock" xlink:label="ObjectivePrimaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectivePrimaryTextBlock" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseHeading" xlink:label="ExpenseHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseHeading" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseNarrativeTextBlock" xlink:label="ExpenseNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseNarrativeTextBlock" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesCaption" xlink:label="ShareholderFeesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesCaption" use="optional" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesCaption" xlink:label="OperatingExpensesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="OperatingExpensesCaption" use="optional" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNarrativeTextBlock" xlink:label="ExpenseExampleNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNarrativeTextBlock" use="optional" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverHeading" xlink:label="PortfolioTurnoverHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverHeading" use="optional" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverTextBlock" xlink:label="PortfolioTurnoverTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverTextBlock" use="optional" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyHeading" xlink:label="StrategyHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyHeading" use="optional" order="26.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyNarrativeTextBlock" xlink:label="StrategyNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyNarrativeTextBlock" use="optional" order="27.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskHeading" xlink:label="RiskHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskHeading" use="optional" order="28.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskNarrativeTextBlock" xlink:label="RiskNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskNarrativeTextBlock" use="optional" order="29.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartAndPerformanceTableHeading" xlink:label="BarChartAndPerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartAndPerformanceTableHeading" use="optional" order="32.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceNarrativeTextBlock" xlink:label="PerformanceNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceNarrativeTextBlock" use="optional" order="33.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartHeading" xlink:label="BarChartHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartHeading" use="optional" order="35.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartClosingTextBlock" xlink:label="BarChartClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartClosingTextBlock" use="optional" order="38.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableHeading" xlink:label="PerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableHeading" use="optional" order="39.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableClosingTextBlock" xlink:label="PerformanceTableClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableClosingTextBlock" use="optional" order="44.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableFootnotesTextBlock" xlink:label="PerformanceTableFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableFootnotesTextBlock" use="optional" order="43.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_MarketIndexPerformanceTableTextBlock" xlink:label="MarketIndexPerformanceTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="MarketIndexPerformanceTableTextBlock" use="optional" order="42.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableTextBlock" xlink:label="PerformanceTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableTextBlock" use="optional" order="41.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableNarrativeTextBlock" xlink:label="PerformanceTableNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableNarrativeTextBlock" use="optional" order="40.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartFootnotesTextBlock" xlink:label="BarChartFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartFootnotesTextBlock" use="optional" order="37.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartTableTextBlock" xlink:label="BarChartTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartTableTextBlock" use="optional" order="36.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartNarrativeTextBlock" xlink:label="BarChartNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartNarrativeTextBlock" use="optional" order="34.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskClosingTextBlock" xlink:label="RiskClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskClosingTextBlock" use="optional" order="31.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskFootnotesTextBlock" xlink:label="RiskFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskFootnotesTextBlock" use="optional" order="30.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleClosingTextBlock" xlink:label="ExpenseExampleClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleClosingTextBlock" use="optional" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleFootnotesTextBlock" xlink:label="ExpenseExampleFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleFootnotesTextBlock" use="optional" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionTableTextBlock" xlink:label="ExpenseExampleNoRedemptionTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionTableTextBlock" use="optional" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionByYearCaption" xlink:label="ExpenseExampleNoRedemptionByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionByYearCaption" use="optional" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionNarrativeTextBlock" xlink:label="ExpenseExampleNoRedemptionNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionNarrativeTextBlock" use="optional" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleWithRedemptionTableTextBlock" xlink:label="ExpenseExampleWithRedemptionTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleWithRedemptionTableTextBlock" use="optional" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearCaption" xlink:label="ExpenseExampleByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearCaption" use="optional" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearHeading" xlink:label="ExpenseExampleByYearHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearHeading" use="optional" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleHeading" xlink:label="ExpenseExampleHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleHeading" use="optional" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesRangeOfExchangeFeesTextBlock" xlink:label="ExpensesRangeOfExchangeFeesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesRangeOfExchangeFeesTextBlock" use="optional" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesDeferredChargesTextBlock" xlink:label="ExpensesDeferredChargesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesDeferredChargesTextBlock" use="optional" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseFootnotesTextBlock" xlink:label="ExpenseFootnotesTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseFootnotesTextBlock" use="optional" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualFundOperatingExpensesTableTextBlock" xlink:label="AnnualFundOperatingExpensesTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualFundOperatingExpensesTableTextBlock" use="optional" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesTableTextBlock" xlink:label="ShareholderFeesTableTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesTableTextBlock" use="optional" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveSecondaryTextBlock" xlink:label="ObjectiveSecondaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveSecondaryTextBlock" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnHeading" xlink:label="RiskReturnHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskReturnHeading" use="optional" order="1.5"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskReturnDetailData">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskReturnAbstract" xlink:label="RiskReturnAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusTable" xlink:label="ProspectusTable"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="RiskReturnAbstract" xlink:to="ProspectusTable" order="1.0" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="DocumentInformationDocumentAxis" use="optional" order="100.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentDomain" xlink:label="DocumentDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="DocumentInformationDocumentAxis" xlink:to="DocumentDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_DDDDMember" xlink:label="DDDDMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="DDDDMember" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_BBBBMember" xlink:label="BBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="BBBBMember" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_CCCCMember" xlink:label="CCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="CCCCMember" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_EEEEMember" xlink:label="EEEEMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="EEEEMember" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="LegalEntityAxis" use="optional" order="200.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_S000032923Member" xlink:label="S000032923Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000032923Member" use="optional" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ProspectusShareClassAxis" xlink:label="ProspectusShareClassAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="ProspectusShareClassAxis" use="optional" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ProspectusShareClassAxis" xlink:to="ShareClassDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureAxis" xlink:label="PerformanceMeasureAxis"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ProspectusTable" xlink:to="PerformanceMeasureAxis" use="optional" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="PerformanceMeasureAxis" xlink:to="PerformanceMeasureDomain" use="optional" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AfterTaxesOnDistributionsAndSalesMember" xlink:label="AfterTaxesOnDistributionsAndSalesMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="AfterTaxesOnDistributionsAndSalesMember" use="optional" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AfterTaxesOnDistributionsMember" xlink:label="AfterTaxesOnDistributionsMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="AfterTaxesOnDistributionsMember" use="optional" order="5.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkConsumerPriceIndexBBBBMember" xlink:label="benchmarkConsumerPriceIndexBBBBMember" xlink:title="benchmarkConsumerPriceIndexBBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmarkConsumerPriceIndexBBBBMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkConsumerPriceIndexBBBBMember" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkBarclaysUSTIPSBBBBMember" xlink:label="benchmarkBarclaysUSTIPSBBBBMember" xlink:title="benchmarkBarclaysUSTIPSBBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmarkBarclaysUSTIPSBBBBMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkBarclaysUSTIPSBBBBMember" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkMSCIWorldIndxBBBBMember" xlink:label="benchmarkMSCIWorldIndxBBBBMember" xlink:title="benchmarkMSCIWorldIndxBBBBMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmarkMSCIWorldIndxBBBBMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkMSCIWorldIndxBBBBMember" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkConsumerPriceIndexCCCCMember" xlink:label="benchmarkConsumerPriceIndexCCCCMember" xlink:title="benchmarkConsumerPriceIndexCCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmarkConsumerPriceIndexCCCCMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkConsumerPriceIndexCCCCMember" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkBarclaysUSTIPSCCCCMember" xlink:label="benchmarkBarclaysUSTIPSCCCCMember" xlink:title="benchmarkBarclaysUSTIPSCCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmarkBarclaysUSTIPSCCCCMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkBarclaysUSTIPSCCCCMember" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_benchmarkMSCIWorldIndxCCCCMember" xlink:label="benchmarkMSCIWorldIndxCCCCMember" xlink:title="benchmarkMSCIWorldIndxCCCCMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="benchmarkMSCIWorldIndxCCCCMember" xlink:title="definition: PerformanceMeasureDomain to benchmarkMSCIWorldIndxCCCCMember" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="abflexbdfd-20150813.xsd#abflexbdfd-20150813_SupplementTextBlock" xlink:label="SupplementTextBlock" xlink:title="SupplementTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="SupplementTextBlock" xlink:title="definition: RiskReturnAbstract to SupplementTextBlock" order="78.5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectiveHeading" xlink:label="ObjectiveHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectiveHeading" use="optional" order="51.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ObjectivePrimaryTextBlock" xlink:label="ObjectivePrimaryTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ObjectivePrimaryTextBlock" use="optional" order="52.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseHeading" xlink:label="ExpenseHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseHeading" use="optional" order="53.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseNarrativeTextBlock" xlink:label="ExpenseNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseNarrativeTextBlock" use="optional" order="54.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ShareholderFeesCaption" xlink:label="ShareholderFeesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ShareholderFeesCaption" use="optional" order="55.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OperatingExpensesCaption" xlink:label="OperatingExpensesCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="OperatingExpensesCaption" use="optional" order="56.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNarrativeTextBlock" xlink:label="ExpenseExampleNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNarrativeTextBlock" use="optional" order="57.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverHeading" xlink:label="PortfolioTurnoverHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverHeading" use="optional" order="58.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PortfolioTurnoverTextBlock" xlink:label="PortfolioTurnoverTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PortfolioTurnoverTextBlock" use="optional" order="59.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyHeading" xlink:label="StrategyHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyHeading" use="optional" order="60.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_StrategyNarrativeTextBlock" xlink:label="StrategyNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="StrategyNarrativeTextBlock" use="optional" order="61.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskHeading" xlink:label="RiskHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskHeading" use="optional" order="62.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_RiskNarrativeTextBlock" xlink:label="RiskNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="RiskNarrativeTextBlock" use="optional" order="63.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartAndPerformanceTableHeading" xlink:label="BarChartAndPerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartAndPerformanceTableHeading" use="optional" order="64.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceNarrativeTextBlock" xlink:label="PerformanceNarrativeTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceNarrativeTextBlock" use="optional" order="65.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartHeading" xlink:label="BarChartHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartHeading" use="optional" order="66.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartClosingTextBlock" xlink:label="BarChartClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartClosingTextBlock" use="optional" order="67.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableHeading" xlink:label="PerformanceTableHeading"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableHeading" use="optional" order="68.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_PerformanceTableClosingTextBlock" xlink:label="PerformanceTableClosingTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="PerformanceTableClosingTextBlock" use="optional" order="69.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionByYearCaption" xlink:label="ExpenseExampleNoRedemptionByYearCaption" xlink:title="ExpenseExampleNoRedemptionByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionByYearCaption" xlink:title="definition: RiskReturnAbstract to ExpenseExampleNoRedemptionByYearCaption" order="73.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleByYearCaption" xlink:label="ExpenseExampleByYearCaption" xlink:title="ExpenseExampleByYearCaption"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleByYearCaption" xlink:title="definition: RiskReturnAbstract to ExpenseExampleByYearCaption" order="106.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ManagementFeesOverAssets" xlink:label="ManagementFeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ManagementFeesOverAssets" use="optional" order="70.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_DistributionAndService12b1FeesOverAssets" xlink:label="DistributionAndService12b1FeesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="DistributionAndService12b1FeesOverAssets" use="optional" order="71.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_OtherExpensesOverAssets" xlink:label="OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="OtherExpensesOverAssets" use="optional" order="72.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpensesOverAssets" xlink:label="ExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpensesOverAssets" use="optional" order="73.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear01" xlink:label="ExpenseExampleNoRedemptionYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionYear01" use="optional" order="74.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear03" xlink:label="ExpenseExampleNoRedemptionYear03"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionYear03" use="optional" order="75.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear05" xlink:label="ExpenseExampleNoRedemptionYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionYear05" use="optional" order="76.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleNoRedemptionYear10" xlink:label="ExpenseExampleNoRedemptionYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleNoRedemptionYear10" use="optional" order="77.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2004" xlink:label="AnnualReturn2004"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2004" use="optional" order="78.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2005" xlink:label="AnnualReturn2005"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2005" use="optional" order="79.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2006" xlink:label="AnnualReturn2006"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2006" use="optional" order="80.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2007" xlink:label="AnnualReturn2007"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2007" use="optional" order="81.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2008" xlink:label="AnnualReturn2008"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2008" use="optional" order="82.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2009" xlink:label="AnnualReturn2009"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2009" use="optional" order="83.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2010" xlink:label="AnnualReturn2010"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2010" use="optional" order="84.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2011" xlink:label="AnnualReturn2011"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2011" use="optional" order="85.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2012" xlink:label="AnnualReturn2012"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2012" use="optional" order="86.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AnnualReturn2013" xlink:label="AnnualReturn2013"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AnnualReturn2013" use="optional" order="87.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear01" xlink:label="AverageAnnualReturnYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AverageAnnualReturnYear01" use="optional" order="88.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear05" xlink:label="AverageAnnualReturnYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AverageAnnualReturnYear05" use="optional" order="89.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnYear10" xlink:label="AverageAnnualReturnYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AverageAnnualReturnYear10" use="optional" order="90.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AcquiredFundFeesAndExpensesOverAssets" xlink:label="AcquiredFundFeesAndExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AcquiredFundFeesAndExpensesOverAssets" use="optional" order="91.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssets" xlink:label="FeeWaiverOrReimbursementOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="FeeWaiverOrReimbursementOverAssets" use="optional" order="92.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_NetExpensesOverAssets" xlink:label="NetExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="NetExpensesOverAssets" use="optional" order="93.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear01" xlink:label="ExpenseExampleYear01"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleYear01" use="optional" order="94.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear03" xlink:label="ExpenseExampleYear03"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleYear03" use="optional" order="95.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_AverageAnnualReturnSinceInception" xlink:label="AverageAnnualReturnSinceInception"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="AverageAnnualReturnSinceInception" use="optional" order="96.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_YearToDateReturnLabel" xlink:label="YearToDateReturnLabel" xlink:title="YearToDateReturnLabel"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="YearToDateReturnLabel" xlink:title="definition: RiskReturnAbstract to YearToDateReturnLabel" order="97.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartYearToDateReturn" xlink:label="BarChartYearToDateReturn" xlink:title="BarChartYearToDateReturn"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartYearToDateReturn" xlink:title="definition: RiskReturnAbstract to BarChartYearToDateReturn" order="98.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartYearToDateReturnDate" xlink:label="BarChartYearToDateReturnDate" xlink:title="BarChartYearToDateReturnDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartYearToDateReturnDate" xlink:title="definition: RiskReturnAbstract to BarChartYearToDateReturnDate" order="99.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_HighestQuarterlyReturnLabel" xlink:label="HighestQuarterlyReturnLabel" xlink:title="HighestQuarterlyReturnLabel"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="HighestQuarterlyReturnLabel" xlink:title="definition: RiskReturnAbstract to HighestQuarterlyReturnLabel" order="100.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartHighestQuarterlyReturn" xlink:label="BarChartHighestQuarterlyReturn" xlink:title="BarChartHighestQuarterlyReturn"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartHighestQuarterlyReturn" xlink:title="definition: RiskReturnAbstract to BarChartHighestQuarterlyReturn" order="101.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartHighestQuarterlyReturnDate" xlink:label="BarChartHighestQuarterlyReturnDate" xlink:title="BarChartHighestQuarterlyReturnDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartHighestQuarterlyReturnDate" xlink:title="definition: RiskReturnAbstract to BarChartHighestQuarterlyReturnDate" order="102.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_LowestQuarterlyReturnLabel" xlink:label="LowestQuarterlyReturnLabel" xlink:title="LowestQuarterlyReturnLabel"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="LowestQuarterlyReturnLabel" xlink:title="definition: RiskReturnAbstract to LowestQuarterlyReturnLabel" order="103.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartLowestQuarterlyReturn" xlink:label="BarChartLowestQuarterlyReturn" xlink:title="BarChartLowestQuarterlyReturn"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartLowestQuarterlyReturn" xlink:title="definition: RiskReturnAbstract to BarChartLowestQuarterlyReturn" order="104.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_BarChartLowestQuarterlyReturnDate" xlink:label="BarChartLowestQuarterlyReturnDate" xlink:title="BarChartLowestQuarterlyReturnDate"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="BarChartLowestQuarterlyReturnDate" xlink:title="definition: RiskReturnAbstract to BarChartLowestQuarterlyReturnDate" order="105.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_Component1OtherExpensesOverAssets" xlink:label="Component1OtherExpensesOverAssets"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="Component1OtherExpensesOverAssets" xlink:title="definition: RiskReturnAbstract to Component1OtherExpensesOverAssets" use="optional" order="72.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear05" xlink:label="ExpenseExampleYear05"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleYear05" xlink:title="definition: RiskReturnAbstract to ExpenseExampleYear05" use="optional" order="95.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_ExpenseExampleYear10" xlink:label="ExpenseExampleYear10"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="ExpenseExampleYear10" xlink:title="definition: RiskReturnAbstract to ExpenseExampleYear10" use="optional" order="95.2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd#rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination" xlink:label="FeeWaiverOrReimbursementOverAssetsDateOfTermination" xlink:title="FeeWaiverOrReimbursementOverAssetsDateOfTermination"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="FeeWaiverOrReimbursementOverAssetsDateOfTermination" xlink:title="definition: RiskReturnAbstract to FeeWaiverOrReimbursementOverAssetsDateOfTermination" order="107.0"/>
  </link:definitionLink>
</link:linkbase>
