<http://schema.org/headline>
"Britney Spears adds Backstreet Boy Howie Dorough to South America tour"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/news/a347515/britney-spears-adds-backstreet-boy-howie-dorough-to-south-america-tour/>