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>
    <allredirects garcontinue="Cosma_Chiara" />
  </query-continue>
  <query>
    <pages>
      <page pageid="8097" ns="0" title="Baltasar Toneu" />
      <page pageid="13140" ns="0" title="Benedicto XIII" />
      <page pageid="13142" ns="0" title="Benedicto XIV" />
      <page pageid="8011" ns="0" title="Bernard Siruć" />
      <page pageid="7814" ns="0" title="Bernardo Pobo" />
      <page pageid="7908" ns="0" title="Carlo Giuseppe Rossi" />
      <page pageid="7450" ns="0" title="Celestyn Kaliszewski" />
      <page pageid="13183" ns="0" title="Clemente IX" />
      <page pageid="13185" ns="0" title="Clemente VIII" />
      <page pageid="13187" ns="0" title="Clemente XIII" />
    </pages>
  </query>
</api>