<http://schema.org/image_url>
"http://media.al.com/wire/photo/john-boehner-4f104d82a9214070.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/news/index.ssf/2014/06/boehner_obama_may_be_target_of.html>