<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2012/12/-51d46a8addaa9de9.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2013/07/habana_outpost_to_go_before_vi.html>