<http://schema.org/image_url>
"http://media.masslive.com/sports_impact/photo/joel-fisher-71313jpg-dd59bafe503d4373.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.masslive.com/sports/index.ssf/2013/07/michigan_state_catcher_joel_fi.html>