<http://schema.org/image_url>
"http://media.al.com/business_impact/photo/photojpg-29ed41772ab6c2fc.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/business/index.ssf/2013/04/uab_investing_club_beats_harva.html>