<http://schema.org/primaryImageOfPage>
"http://media.mnn.com/assets/images/2011/09/20110906_zaf_x99_312.jpg_6cf111dfe1.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/gadgets-electronics/photos/eco-photos-of-the-week-sept-4-10/cuautitlan-submerged>