<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2012/08/-44fdc085c7d41cfe.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2013/05/civil_engineer_appointed_to_ea.html>