<http://schema.org/headline>
"Letterman, O'Brien poke fun at Jay Leno"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Entertainment_News/TV/2012/05/18/Letterman-OBrien-poke-fun-at-Jay-Leno/UPI-85801337372040/>