<http://schema.org/image_url>
"http://media.mlive.com/detroit/photo/2013/03/-187e1947986acc30.JPG"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.mlive.com/5628/gallery/detroit_archbishop_prayer_service_for_election_of_new_pope/index.html>