<http://schema.org/image_url>
"http://media.masslive.com/sports_impact/photo/richard-hamilton-apjpg-44701d65ce8aa474.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.masslive.com/sports/index.ssf/2011/02/top_5_players_boston_celtics_m.html>