<http://schema.org/keywords>
"Bruno Mars Uptown Funk"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.hindustantimes.com/music/missy-elliott-tweets-picture-with-bruno-mars-hints-at-collaboration/story-0lRX9BG2PUqiUZdR1vrWOJ.html>