<http://schema.org/image_url>
"http://media.al.com/sports_impact/photo/jonathan-vilma-saintsjpg-187564843a7e982a.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/sports/index.ssf/2012/06/goodell_hears_bounty_appeals_j.html>