<http://schema.org/image_url>
"http://media.al.com/opinion/photo/morrisgardenjpg-f4d5158cc49a3968.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/opinion/index.ssf/2013/02/what_i_love_about_birmingham.html>