<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/larry-blakeneyjpg-98173fc01d17183b.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2012/09/troy_turns_its_attention_back.html>