<http://schema.org/image_url>
"http://media.al.com/opinion/photo/jo-johnson-marchjpg-3159ff3cc19cfe73.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/opinion/index.ssf/2013/12/huntsvilles_black_elected_offi.html>