<http://schema.org/image_url>
"http://media.mlive.com/citizenpatriot/photo/2012/04/-d7df1fddd969b9a8.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.mlive.com/4471/gallery/4-24-12_line_dancing_class_at_the_jackson_moose_lodge/index.html>