<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="my_stylesheet.xsl"?>
<feed xmlns="http://www.w3.org/2005/Atom">
  <!-- Not a valid atom entry -->
  <entry>
    <title type="html"><![CDATA[<<strong>>]]></title>
    <content type="xhtml">
      <xhtml:div xmlns:xhtml="http://www.w3.org/1999/xhtml">
        <xhtml:p>hi there</xhtml:p>
      </xhtml:div>
    </content>
  </entry>
</feed>