<http://schema.org/image_url>
"http://media.nola.com/politics/photo/mitchlifejacketjpg-832dc857d8b84719.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2010/05/america_must_recognize_value_o.html>