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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-continue>
    <allpages gapcontinue="Rebel_Heart_Irish_Dancers" />
  </query-continue>
  <query>
    <pages>
      <page pageid="4925" ns="0" title="Realta School of Irish Dance">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">Facebook: [https://www.facebook.com/RealtaIrishDanceSchoolNewtownards]

Teacher: Maeve Rankin, ADCRG

Association: CLRG</rev>
        </revisions>
      </page>
      <page pageid="1739" ns="0" title="Reaney Academy of Irish Dance">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">The Reaney Academy of Irish Dance, Burlington, Ontario is now closed.</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>