<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/kobe-bryant--6985cf63793ecd2a.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2013/12/knee_injury_expected_to_keep_l.html>