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HTML is good for debugging, but probably is not suitable for your application.
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<?xml version="1.0"?>
<api>
  <query>
    <random>
      <page id="628" ns="0" title="Holešovice 198" />
      <page id="223" ns="0" title="Holešovice 1134" />
    </random>
  </query>
</api>