<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/stuart-stefanjpg-235a4ee04dfadf2f.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2014/03/havocs_stuart_stefan_selected.html>