RDF and SPARQL

Hi everyone,
is anybody working on implementing RDF functionality and SPARQL querying for Modx? I’m planning on doing so, since I think it would be awesome to be able to enrich your content with external data (eg wikipedia, dbpedia) or to become a RDF repository to exchange data with other (Modx-)sites.
I have been playing around for a couple of months now with the concept, basics of the query language, etc. to get the hang of it. And now recently I have been looking into some php classes like ARC (http://arc.semsol.org) and RDFAPI-PHP (http://sourceforge.net/projects/rdfapi-php/) to start querying the semantic web outthere!
So I would like to spend my spare time on this some more, and I’m willing to contribute some decent code to the Modx-community since I think this would be a great future for Modx as well. But it would also be nice to know if others are doing similar stuff, so we could share ideas or speed up some development and come to plug-and-play real life solutions for the Modx users.

This is certainly outside my scope of knowledge but the more interaction points that can be built on MODx the better. I would say get started and if you need help with developing your project for MODx please feel free to post.

Cheers,

Jay