<http://schema.org/headline>
"Paul McCartney, U2, Bruce Springsteen Join Call for Pussy Riot's Release"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.rollingstone.com/music/news/paul-mccartney-u2-bruce-springsteen-join-call-for-pussy-riots-release-20130722>