<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2013/05/-7e0a17b7d0ab934e.JPG"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nola.com/4500/gallery/grilled_fish_with_chef_donald_link/index.html>