<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/uab-alex-luna-c19af22da156d32b.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2014/04/uab_pitcher_alex_luna_off_to_h.html>