<http://schema.org/image_url>
"http://media.nj.com/hunterdon-photos/photo/2012/10/hurricane-sandy-late-afternoon-oct-29-1-9be8cc1103515571.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nj.com/4645/gallery/hurricane_sandy_late_afternoon_oct_29/index.html>