<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2010/10/-1b9211c83202c4b4.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.nola.com/4500/gallery/jefferson_parish_sheriffs_office_crime_lab/index.html>