<http://schema.org/image_url>
"http://media.mlive.com/grandrapidspress/photo/2012/07/11355598-large.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mlive.com/sports/grand-rapids/index.ssf/2012/07/former_olympian_jean_prahm_des.html>