<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by CompSci Transform (tm) - http://www.compsciresources.com -->
<!-- Created: Tue Apr 04 17:08:34 UTC 2023 -->
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  <xs:annotation>
    <xs:appinfo>
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      <link:linkbaseRef xlink:type="simple" xlink:href="sga-20221231_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="sga-20221231_def.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef"/>
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  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2022q4" schemaLocation="https://xbrl.sec.gov/ecd/2022q4/ecd-2022q4.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
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  <xs:import namespace="http://xbrl.sec.gov/ecd-sub/2022q4" schemaLocation="https://xbrl.sec.gov/ecd/2022q4/ecd-sub-2022q4.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei-sub/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-sub-2022.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
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<!-- [WMV5][XcpuxYn59dz7vgYynUDuwG7r97K2jUTysl7vcz0lJt/tC7CvZHOJjSUEJbYlSz0QmT1AzchKAjg5AqVJioVI5OMRn4+5KvAhz5+ufeBfK9XitAgH7rBdaCoWjD0jzwC6MM3pcmJdkUxB698ltsDDrR+FhYhspWZKjzdKHtsym+iOshFzMjiSOUH+RD5Tp+v42jQ+w2lIYOV0/9N7cKJpex8QmthS2plvpin60MGWRlMao3rmwyn75jIU5tUSq9whtWfufBtLW+1s2Hm78Gpjxw==] CSR-->
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  <xs:element name="EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfCurrentAwardsVestedDuringCurrentYearMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfCurrentAwardsVestedDuringCurrentYearMember"/>
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  <xs:element name="EquityAwardsAdjustmentsOfFairValueOfEquityAwardsGrantedInTheCoveredYearThatWereOutstandingAndUnvestedAsOfTheCoveredYearEndMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_EquityAwardsAdjustmentsOfFairValueOfEquityAwardsGrantedInTheCoveredYearThatWereOutstandingAndUnvestedAsOfTheCoveredYearEndMember"/>
  <xs:element name="EquityAwardsAdjustmentsOfStockAwardsGrantDateFairValueOfEquityAwardsToSCTMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_EquityAwardsAdjustmentsOfStockAwardsGrantDateFairValueOfEquityAwardsToSCTMember"/>
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  <xs:element name="NetAdjustmentsForEquityAwardsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_NetAdjustmentsForEquityAwardsMember"/>
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  <xs:element name="PensionAdjustmentsPriorServiceCostMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_PensionAdjustmentsPriorServiceCostMember"/>
  <xs:element name="PensionAdjustmentsServiceCostMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_PensionAdjustmentsServiceCostMember"/>
  <xs:element name="PensionValueAndEquityAwardsValueInCompensationTableForTheApplicableYearMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_PensionValueAndEquityAwardsValueInCompensationTableForTheApplicableYearMember"/>
  <xs:element name="PensionValueInCompensationTableForTheApplicableYearMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_PensionValueInCompensationTableForTheApplicableYearMember"/>
  <xs:element name="SecondPEOMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_SecondPEOMember"/>
  <xs:element name="ThirdPEOMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="sga_ThirdPEOMember"/>
</xs:schema>
