<http://schema.org/image_url>
"http://media.al.com/entertainment_impact/photo/huntsville-restaurant-week-78d19fcf7e97c9a3.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/entertainment/index.ssf/2013/09/huntsville_restaurant_week_sur.html>