<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/reginald-buckner-02092013-f71c6a1d2c20264c.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2013/02/ole_miss_optimistic_after_losi.html>