<http://schema.org/image_url>
"http://media.al.com/breaking/photo/school-bus-in-front-of-madison-elementary-schooljpg-7829f89f8aff5ad4.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/news/index.ssf/2014/09/millions_for_the_classroom_tro.html>