<http://schema.org/image_url>
"http://media.nola.com/politics/photo/richard-cortizasjpg-0c106c642c9bc91f.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2011/06/likely_opening_for_new_orleans.html>