<http://schema.org/image_url>
"http://media.nola.com/politics/photo/newt-gingrich-mitt-romney-jacksonville-debatejpg-53e11a98a19b398f.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2012/01/newt_gingrich_under_fire_from.html>