<http://schema.org/topics>
"Apple,Apps and Software,iOS 8 ,iPhone,mac,Mobile,OS X,os x yosemite,software,Tech,Uncategorized,WWDC,Yosemite"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2014/06/03/hidden-ios-8-and-osx-yosemite/>