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  <!--NOTE: numberReturned attribute should be 'unknown' as well, but this would not validate against the current version of the WFS 2.0 schema (change upcoming). See change request (CR 144): https://portal.opengeospatial.org/files?artifact_id=43925.-->
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        <bu-base:ExternalReference>
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        <bu-base:HeightAboveGround>
          <bu-base:heightReference xsi:nil="true"/>
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          <bu-base:status xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://inspire.ec.europa.eu/codelist/HeightStatusValue/measured"/>
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          <gn:spelling>
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        </gn:GeographicalName>
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        <bu-base:CurrentUse>
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        </bu-base:CurrentUse>
      </bu-base:currentUse>
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