<http://schema.org/topics>
"cameras,CES 2011,ces2011,Gadgets,Lady Gaga,mobile camera,mobile printer,news,polaroid,Tech,zink"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/01/06/polaroid-lady-gaga-launch-new-line-at-ces/>