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  <element name="LowestQuarterlyReturnSecondQuarter2011" id="wraf4_LowestQuarterlyReturnSecondQuarter2011" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="LowestQuarterlyReturnFirstQuarter2011" id="wraf4_LowestQuarterlyReturnFirstQuarter2011" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="LowestQuarterlyReturnFourthQuarter2010" id="wraf4_LowestQuarterlyReturnFourthQuarter2010" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="LowestQuarterlyReturnThirdQuarter2010" id="wraf4_LowestQuarterlyReturnThirdQuarter2010" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="LowestQuarterlyReturnSecondQuarter2010" id="wraf4_LowestQuarterlyReturnSecondQuarter2010" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="MoneyMarketSevenDayYieldDate" id="wraf4_MoneyMarketSevenDayYieldDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
</schema>
