<http://schema.org/image_url>
"http://media.al.com/wire/photo/bentleyjpg-48d00a97f742c22d.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/business/index.ssf/2014/02/gov_robert_bentley_alabamas_jo.html>