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>
    <links gplcontinue="1|0|Document_GPF_activities_by_Sandra_Villamizar" />
  </query-continue>
  <query>
    <pages>
      <page pageid="290" ns="0" title="Document GPF activities" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:12:30Z" lastrevid="11841" counter="17892" length="590" />
      <page pageid="1170" ns="0" title="Document GPF activities by Allen Pope" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:38:18Z" lastrevid="11911" counter="10074" length="856" />
      <page pageid="1035" ns="0" title="Document GPF activities by Cedric David" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:33:48Z" lastrevid="11867" counter="11915" length="826" />
      <page pageid="1055" ns="0" title="Document GPF activities by Heath Mills" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:34:49Z" lastrevid="11875" counter="10865" length="816" />
      <page pageid="1045" ns="0" title="Document GPF activities by Ibrahim Demir" contentmodel="wikitext" pagelanguage="en" touched="2015-05-12T17:47:45Z" lastrevid="11978" counter="10439" length="837" />
      <page pageid="1159" ns="0" title="Document GPF activities by Ji-Hyun Oh" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:38:03Z" lastrevid="11907" counter="10714" length="806" />
      <page pageid="1248" ns="0" title="Document GPF activities by Jon Goodall" contentmodel="wikitext" pagelanguage="en" touched="2015-06-22T16:29:43Z" lastrevid="12153" counter="11954" length="875" />
      <page pageid="1202" ns="0" title="Document GPF activities by Kyo Lee" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:38:34Z" lastrevid="11915" counter="8643" length="776" />
      <page pageid="1115" ns="0" title="Document GPF activities by Leif Karlstrom" contentmodel="wikitext" pagelanguage="en" touched="2015-04-26T18:34:12Z" lastrevid="11935" counter="9714" length="874" />
      <page pageid="1075" ns="0" title="Document GPF activities by Mimi Tzeng" contentmodel="wikitext" pagelanguage="en" touched="2015-04-17T05:36:48Z" lastrevid="11887" counter="8774" length="806" />
    </pages>
  </query>
</api>