<http://schema.org/topics>
"Apps and Software,Metro,Microsoft,Tech,Uncategorized,Windows,Windows 8,Windows 8 Pro,Windows on ARM,Windows RT"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2012/04/16/microsoft-windows-8-names/?WT.mc_id=en_windows>