Kendall Grant Clark has been writing and talking about XML, the Web, and the Semantic Web since 1998. As veteran of a few SGML-powered,large-scale document respositories and portals, Clark has writte nnearly 100 articles for the O'Reilly Network and XML.com. In addition to research and peer-reviewed academic publications in Semantic Web, Clark has served as the Columns Editor of XML.com and is now XML.com's Managing Editor. He is a faculty research associate at the University of Maryland, College Park's MIND Lab, a Semantic Web research lab. He is a member of the W3C's Data Access Working Group and is the editor of the DAWG's Use Cases and Requirements document, as well as the SPARQL protocol specification. He's a principal in Clark+Parsia, a Semantic Web consulting firm. Kendall Clark lives in downtown Washington, DC, and is a fiercely serious amateur chef.