<http://schema.org/headline>
"Zuckerberg donates 18M Facebook shares worth $500M to the Silicon Valley Community Foundation"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2012/12/19/zuckerberg-donates-18m-facebook-shares-worth-500m-to-the-silicon-valley-community-foundation/?fromcat=all>