<http://schema.org/headline>
"Iran digs in heels on nuclear centrifuges at Vienna talks - envoys"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.thestar.com.my/News/World/2014/06/18/Iran-digs-in-heels-on-nuclear-centrifuges-at-Vienna-talks--envoys/>