<http://schema.org/headline>
"Political theorist Benjamin Barber to deliver keynote at GrowSmartRI summit"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.providencejournal.com/breaking-news/content/20140522-political-theorist-benjamin-barber-to-deliver-keynote-at-growsmartri-summit.ece>