<http://schema.org/image_url>
"http://annarbor.com/assets/thumbnail_cache/2013/07/07/300w_porkwithcherrysauce.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mlive.com/grocery/2013/07/pork_with_sweet-tart_cherry_sa.html>