<http://schema.org/image_url>
"http://media.al.com/news_montgomery_impact/photo/weatherpng-c2088d3a4484654a.png"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/news/montgomery/index.ssf/2014/01/bitter_cold_tonight_in_montgom.html>