<http://schema.org/image_url>
"http://media.nola.com/tpphotos/photo/2013/01/-2c2390f64470049e.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2013/10/slidell_city_council_approves_8.html>