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>
    <pages>
      <page ns="0" title="API" missing="" />
      <page pageid="1" ns="0" title="Main Page">
        <revisions>
          <rev user="Wikiroot" timestamp="2013-03-31T01:25:36Z" xml:space="preserve">'''Unsupervised Feature Learning and Deep Learning'''

You probably want the [[UFLDL Tutorial]].  

Or maybe you want the [[UFLDL Recommended Readings]].


&lt;span class=&quot;plainlinks&quot;&gt;[http://www.oro-compro.com &lt;span style=&quot;color:#ffffff;font-weight:normal; text-decoration:none!important; background:none!important; text-decoration:none;&quot;&gt;compro oro&lt;/span&gt;]</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>