<?xml version="1.0"?> <api> <query> <pages> <page pageid="423" ns="0" title="Main Page"> <revisions> <rev /> </revisions> </page> </pages> </query> <warnings> <revisions xml:space="preserve">Unrecognized value for parameter 'rvprop': timestamp%7Cuser%7Ccomment</revisions> </warnings> </api>