<http://schema.org/keywords>
"iPhone"^^<http://www.w3.org/2001/XMLSchema#string>
<http://blogs.wsj.com/digits/2013/02/01/apple-becomes-top-mobile-phone-vendor-in-u-s-during-fourth-quarter/?mod=WSJBlog&mod=WSJ_FinancingAndInvesting_BLOGSDIGITALDAILY>