<http://schema.org/image_url>
"http://media.nj.com/photogallery/photo/2011/06/e8b54b9512250104f2647868131dad73.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nj.com/8001122/gallery/the_new_jersey_state_fair_2011/index.html>