<http://schema.org/image_url>
"http://media.masslive.com/sports_impact/photo/dodgers-padres-199429fbfa19440f.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.masslive.com/sports/index.ssf/2013/04/dodgers_pitcher_zack_greinke_w.html>