Bug parsing Drupal 7 markup

[Stephane Corlosquet]

 http://drupalrdf.openspring.net/node/106

Snippet of interest (some tags were removed for clarity but this should still trigger the bug):

<div typeof="sioc:Post sioct:Comment" about="/comment/689#comment-689" class="comment odd">

<div class="clearfix">

<div class="content">

<span class="rdf-meta" resource="/node/106" rel="sioc:reply_of"/> <div class="field field-name-comment-body field-type-text-long field-label-hidden clearfix"><div class="field-items"><div property="content:encoded" class="field-item even"><p>Abdo ea vero diam exerci abigo iusto. Volutpat usitas melior ymo mos te importunus accumsan. Ea laoreet volutpat pneum commodo. Inhibeo wisi patria praesent melior. Odio mauris inhibeo sudo scisco ymo. Quia paratus utrum illum duis premo macto ludus te volutpat.</p></div></div></div>

</div>

</div>

</div>

The span.rdf-meta tag should trigger the triple (but it doesn't):

</comment/689#comment-689> sioc:reply_of </node/106>