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="Галерея" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1036" ns="0" title="Антарктида (декабрь 2019)" contentmodel="wikitext" pagelanguage="ru" touched="2024-01-17T10:29:48Z" lastrevid="2201" counter="2919" length="2227" />
      <page pageid="567" ns="0" title="Восьмой российский семинар Ван Липина (апрель-май 2015)" contentmodel="wikitext" pagelanguage="ru" touched="2016-04-30T20:57:31Z" lastrevid="1368" counter="5026" length="1868" />
      <page pageid="236" ns="0" title="Всекитайский семинар Ван Липина в Тао Хуа Юань (август 2010)" contentmodel="wikitext" pagelanguage="ru" touched="2012-12-17T08:52:13Z" lastrevid="427" counter="4822" length="6215" />
      <page pageid="242" ns="0" title="Второй российский семинар Ван Липина" contentmodel="wikitext" pagelanguage="ru" touched="2012-12-18T06:17:57Z" lastrevid="662" counter="6829" length="8715" />
    </pages>
  </query>
</api>