<http://schema.org/topics>
"20th century fox,amanda silver,avatar,Conversations,Entertainment,Movies,james cameron,jon landau,josh friedman,rick jaffa,shane salerno,Uncategorized,Video"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2013/08/01/james-cameron-avatar-sequels/>