I added support for Semantic MediaWiki to my MediaWiki graph data structure-generating extension and figured I might as well announce it to this list.
Source and Documentation:
Currently, the output is my own XML format (I wanted to make it as simple as possible). RDF output is still a possibility.
If you have any comments or feature requests, don't hesitate to voice them.
P.S. Great work on Semantic MediaWiki. We recently installed it on
http://wiki.case.edu and some people are already finding some cool uses (http://blog.case.edu/bmb12/2006/09/geocoding_tools_for_python_and_caseclasses