<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2013/08/-64fe4f83f1432a12.JPG"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nola.com/4500/gallery/lsu_holds_football_holds_opening_practice_in_baton_rouge/index.html>