You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <recentchanges>
      <rc type="edit" ns="4" title="Semantic Web Quality Wiki:About" rcid="648" pageid="5" revid="652" old_revid="651" timestamp="2015-08-27T17:37:24Z" />
      <rc type="edit" ns="4" title="Semantic Web Quality Wiki:About" rcid="647" pageid="5" revid="651" old_revid="650" timestamp="2015-08-27T17:36:50Z" />
      <rc type="edit" ns="4" title="Semantic Web Quality Wiki:About" rcid="646" pageid="5" revid="650" old_revid="649" timestamp="2015-08-27T17:36:29Z" />
      <rc type="edit" ns="4" title="Semantic Web Quality Wiki:About" rcid="645" pageid="5" revid="649" old_revid="644" timestamp="2015-08-27T17:35:42Z" />
      <rc type="edit" ns="0" title="Data Requirements Consistency Checks" rcid="644" pageid="28" revid="648" old_revid="647" timestamp="2015-02-27T12:37:43Z" />
      <rc type="edit" ns="0" title="Data Requirements Consistency Checks" rcid="643" pageid="28" revid="647" old_revid="646" timestamp="2015-02-27T12:36:35Z" />
      <rc type="edit" ns="0" title="Data Requirements Consistency Checks" rcid="642" pageid="28" revid="646" old_revid="645" timestamp="2015-02-27T12:35:19Z" />
      <rc type="edit" ns="0" title="Data Requirements Consistency Checks" rcid="641" pageid="28" revid="645" old_revid="638" timestamp="2015-02-27T12:34:59Z" />
      <rc type="edit" ns="4" title="Semantic Web Quality Wiki:About" rcid="640" pageid="5" revid="644" old_revid="643" timestamp="2012-12-06T11:18:04Z" />
      <rc type="edit" ns="4" title="Semantic Web Quality Wiki:About" rcid="639" pageid="5" revid="643" old_revid="642" timestamp="2012-12-06T11:16:54Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2012-12-06T11:16:24Z" />
  </query-continue>
</api>