<http://schema.org/image_url>
"http://media.al.com/news_birmingham_impact/photo/water-works-and-davis-jpg-6d30e08bc42a35d6.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/news/birmingham/index.ssf/2014/07/water_works_fraud_case_heres_w.html>