<http://schema.org/keywords>
"pop culture"^^<http://www.w3.org/2001/XMLSchema#string>
<http://popcultureblog.dallasnews.com/2013/01/dallas-rb-star-erykah-badu-tweets-about-goin-up-in-apple-store-with-my-pistol-right-now-after-she-loses-phone-contacts.html/>