<http://schema.org/topics>
"Apps and Software,Food,food delivery,grubhub,Home,Lists,Mashable Infogragphics,Startups,ugc,Uncategorized,Watercooler"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2014/07/08/grubhub-searches/>