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-continue>
    <allimages gaifrom="Africa-regions.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="805791" ns="6" title="Fil:1 Kor 6-9.jpg" />
      <page pageid="805794" ns="6" title="Fil:1 Mos 1-1.jpg" />
      <page pageid="805790" ns="6" title="Fil:1 Tim 1-10.jpg" />
      <page pageid="800517" ns="6" title="Fil:250px-Pythagorean.svg.png" />
      <page pageid="805786" ns="6" title="Fil:3 Mos 18-22.jpg" />
      <page pageid="805793" ns="6" title="Fil:3 Mos 20-13.jpg" />
      <page pageid="800592" ns="6" title="Fil:ADN static.png" />
      <page pageid="800516" ns="6" title="Fil:Ac.pnyx.jpg" />
      <page pageid="800527" ns="6" title="Fil:Ad Encyclopaedia-Britannica 05-1913.jpg" />
      <page pageid="800735" ns="6" title="Fil:Adam skapas - michelangelo.gif" />
    </pages>
  </query>
</api>