<http://schema.org/image_url>
"http://media.al.com/business_impact/photo/rx-mortar-pestlejpg-4172324d7cd35cae.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/business/index.ssf/2014/01/understanding_alabamas_prescri.html>