<http://schema.org/thumbnail>
"http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/01/29/130129120129_red_berries_640x360_bbc.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://bbcswahili.com/swahili/medianuai/2013/02/130220_chakula_shortage.shtml>