<http://schema.org/image_url>
"http://media.nola.com/politics/photo/barack-obama-john-boehner-debtjpg-723aeee155cdc9b8.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2011/07/rival_plans_ensnarl_congress_o.html>