<http://schema.org/headline>
"Serena Williams nears return to No. 1"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Sports_News/2013/02/14/Serena-Williams-nears-return-to-No-1/UPI-15351360869410/?spt=mps&or=3>