<http://schema.org/image_url>
"http://media.al.com/breaking/photo/huntsville-hospital-tramjpg-93beb87550e8c5e5.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/business/index.ssf/2014/05/wednesday_business_wrap_great.html>