<http://schema.org/topics>
"bob marley,Celebrities,news,east africa,famine,high tide or low tide,im gonna be your friend,Music,non-profit,pop culture,save the children,Social Good,Social Media,somalia"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/08/09/famine-east-africa/>