<http://schema.org/description>
"Today, Facebook announced the\u00A0launch of Graph Search to help users find useful information via the social graph. For now, Graph Search is only available to a small segment of users, ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2013/01/15/hands-on-with-facebook-graph-search/>