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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query subject="Attraktor_Wiki#0#" serializer="SMW\Serializers\SemanticDataSerializer" version="0.1">
    <data>
      <property property="_ASK">
        <dataitem>
          <value type="9" item="Attraktor_Wiki#0##_QUERY09b47eb134f7a9f93cedbf9c6d67abdc" />
        </dataitem>
      </property>
      <property property="_MDAT">
        <dataitem>
          <value type="6" item="1/2024/2/16/11/51/57" />
        </dataitem>
      </property>
      <property property="_SKEY">
        <dataitem>
          <value type="2" item="Attraktor Wiki" />
        </dataitem>
      </property>
    </data>
    <sobj>
      <subobject subject="Attraktor_Wiki#0##_QUERY09b47eb134f7a9f93cedbf9c6d67abdc">
        <data>
          <property property="_ASKDE">
            <dataitem>
              <value type="1" item="1" />
            </dataitem>
          </property>
          <property property="_ASKFO">
            <dataitem>
              <value type="2" item="template" />
            </dataitem>
          </property>
          <property property="_ASKSI">
            <dataitem>
              <value type="1" item="5" />
            </dataitem>
          </property>
          <property property="_ASKST">
            <dataitem>
              <value type="2" item="[[Enddate::≥16 February 2024]] [[Visible::true]] [[Category:Termin]]" />
            </dataitem>
          </property>
          <property property="_SKEY">
            <dataitem>
              <value type="2" item="Attraktor Wiki" />
            </dataitem>
          </property>
        </data>
      </subobject>
    </sobj>
  </query>
</api>