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>
    <allpages gapcontinue="T-STEM_Initiative_a_Increase_for_Texas_Schools_Students_26977" />
  </query-continue>
  <query>
    <pages>
      <page pageid="78511" ns="0" title="T-STEM Initiative a Boost for Texas Schools Students 23597" contentmodel="wikitext" pagelanguage="ja" touched="2018-10-17T09:33:57Z" lastrevid="87361" counter="3" length="4663" new="" />
      <page pageid="96807" ns="0" title="T-STEM Initiative a Boost for Texas Schools Students 41841" contentmodel="wikitext" pagelanguage="ja" touched="2018-12-13T16:29:56Z" lastrevid="106959" counter="3" length="4108" new="" />
      <page pageid="85812" ns="0" title="T-STEM Initiative a Enhance for Texas Schools Students 47782" contentmodel="wikitext" pagelanguage="ja" touched="2018-11-07T10:55:34Z" lastrevid="95149" counter="3" length="4607" new="" />
      <page pageid="76066" ns="0" title="T-STEM Initiative a Increase for Texas Schools Students 20259" contentmodel="wikitext" pagelanguage="ja" touched="2018-10-10T12:16:29Z" lastrevid="84767" counter="5" length="4615" new="" />
    </pages>
  </query>
</api>