<http://schema.org/image_url>
"http://media.al.com/birmingham-news/photo/2011/01/-37b1fbd5b03ca787.JPG"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2011/01/auburns_celebration_is_memorab.html>