<http://schema.org/caption>
"WPP\u2019s Sorrell says you can\u2019t bet against Zuckerberg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://uk.reuters.com/video/2014/02/27/wpps-sorrell-says-you-cant-bet-against-z?videoId=284200692>