First of all, I like semantic mediawiki a lot! New to the semantic web and, being a biologist, not a computer scientist, this was the first app I saw that really opened my eyes to what might be possible. So, having said that:

I'm experimenting with the RAP Sparql endpoint, I want to run some queries on the data in my instance, and I noticed that no information on the category seems to be stored in the RAP backend.

The Special:ExportRDF dump of a page nicely contains a link to the page category:
   <rdf:type rdf:resource="http://..  ../index.php/Special:URIResolver/Category-3ASome_Category"/>

But even looking in the database underlying RAP, I cannot find a equivalent triple.

Is this a bug or a feature? Is there a way around this?

with best regards