<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/john-nealjpg-7acb5a7a03bca73b.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2011/11/oregon_secondary_coach_john_ne.html>