You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <alllinks galcontinue="Ben_Wallace" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="BAA" missing="" />
      <page ns="0" title="BC Krasnye Krylia" missing="" />
      <page ns="0" title="Babe McCarthy" missing="" />
      <page ns="0" title="Bankers Life Fieldhouse" missing="" />
      <page ns="0" title="Barclays Center" missing="" />
      <page ns="0" title="Baron Davis" missing="" />
      <page ns="0" title="Bell, Reggie" missing="" />
      <page ns="0" title="Ben Gordon" missing="" />
      <page ns="0" title="Ben Sullivan" missing="" />
      <page pageid="5158" ns="0" title="BK-Squad" />
    </pages>
  </query>
</api>