<http://schema.org/headline>
"158.2-carat diamond unearthed in Russia"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Odd_News/2012/09/25/1582-carat-diamond-unearthed-in-Russia/UPI-92701348586569/?rel=33521358871968>