<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2014/03/-0ea35dbeeb7e0fac.JPG"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nola.com/4500/gallery/mardi_gras_indian_super_sunday/index.html>