<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2014/08/10/-c011ccc47214b06f.JPG"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nola.com/4500/gallery/supermoon_around_the_world_-_a/index.html>