You are looking at the HTML representation of the mFormat?> format.
HTML is good for debugging, but probably is not suitable for your application.
Please see "format" parameter documentation at the API help for more information. 
<?xml version="1.0" encoding="utf-8"?>
<api>
  <query-continue>
    <logevents lestart="20090827142321" />
  </query-continue>
  <query>
    <logevents>
      <item ns="6" title="Image:551px-Map of Ohio highlighting Cuyahoga County.svg.png" pageid="8953" type="upload" action="upload" user="Steven.Urueta" timestamp="2009-10-28T17:45:40Z" comment="Released in the public domain by David Benbennick." />
      <item ns="6" title="Image:11 Select Format Fixed.jpg" pageid="8947" type="upload" action="upload" user="Michael.P.Crawford" timestamp="2009-10-21T15:30:11Z" />
      <item ns="6" title="Image:Deanyoung.jpg" pageid="8942" type="upload" action="upload" user="Erika.Lundgrin" timestamp="2009-09-11T21:16:50Z" />
      <item ns="6" title="Image:9-3-09 Block 2 2009.ppt" pageid="8939" type="upload" action="upload" user="Arielle.Kanters" timestamp="2009-09-03T12:21:54Z" />
      <item ns="6" title="Image:9-3-09 Block 2 2009.ppt" pageid="8939" type="upload" action="upload" user="Arielle.Kanters" timestamp="2009-09-03T12:18:00Z" />
      <item ns="0" title="ITS/High Performance Computing ClusterCase-specific help on Paraview" pageid="8938" new_ns="0" new_title="ITS/High Performance Computing Cluster/Case-specific help on Paraview" type="move" action="move" user="Brian.C.Gray" timestamp="2009-08-28T00:04:47Z" />
      <item ns="0" title="Case-specific help on Paraview" pageid="8937" new_ns="0" new_title="ITS/High Performance Computing ClusterCase-specific help on Paraview" type="move" action="move" user="Brian.C.Gray" timestamp="2009-08-28T00:04:27Z" />
      <item ns="0" title="Jon Dozier-Ezell" pageid="8935" new_ns="0" new_title="-" type="move" action="move" user="Thomas.Siu" timestamp="2009-08-27T17:54:40Z" />
      <item ns="6" title="Image:NikonCS9000-small.jpg" pageid="8934" type="upload" action="upload" user="Michael.P.Crawford" timestamp="2009-08-27T14:23:23Z" />
      <item ns="6" title="Image:Optibook3600-small.jpg" pageid="8933" type="upload" action="upload" user="Michael.P.Crawford" timestamp="2009-08-27T14:23:22Z" />
    </logevents>
  </query>
</api>