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="Sign nigeria.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="451" ns="6" title="File:Aasl logo.png" />
      <page pageid="470" ns="6" title="File:Abidjan.jpg" />
      <page pageid="471" ns="6" title="File:Côte d&#039;Ivoire.jpg" />
      <page pageid="233" ns="6" title="File:Prj kamei.png" />
      <page pageid="452" ns="6" title="File:Sign benin.png" />
      <page pageid="453" ns="6" title="File:Sign cameroon.png" />
      <page pageid="454" ns="6" title="File:Sign gabon.png" />
      <page pageid="455" ns="6" title="File:Sign ghana.png" />
      <page pageid="463" ns="6" title="File:Sign ibadan.png" />
      <page pageid="464" ns="6" title="File:Sign kumba.png" />
    </pages>
  </query>
</api>