<http://schema.org/headline>
"Microsoft: 17.7 million Xbox 360s and 8.1 million copies of Halo 3 sold worldwide"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2008/01/03/microsoft-17-7-million-xbox-360s-and-8-1-million-copies-of-halo/>