You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
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<?xml version="1.0"?>
<api>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page" touched="2018-11-16T01:47:16Z" lastrevid="5940" counter="7745249" length="4070" />
    </pages>
  </query>
</api>