<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/david-frees-jpgjpg-9a6e4912fb5c0344.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2011/02/st_louis_cardinals_making_davi.html>