<http://schema.org/image_url>
"http://media.nola.com/politics/photo/second-harvest-food-bank-box-lunchesjpg-92c7835f914e9cff.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2012/09/more_of_louisiana_state_income.html>