I'm the W3C staff contact for this Working Group. That means I help the chairs keep the group working smoothly, help with the tools and W3C process, and will sometimes participate in technical discussion.
I'm a software developer, and I've been at W3C doing Semantic Web development and standards since 2000. I've been participating in W3C Working Groups since 2003. My groups have include WebOnt (OWL 1), OWL 2, RIF, SPARQL 1.1, and the new RDF Working Group. I'm also the W3C eGovernment activity lead and staff contact for those groups.