<http://schema.org/image_url>
"http://media.nola.com/living_baton_rouge/photo/louisiana-state-capitol-baton-rouge-16b3495de0237ffe.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2013/10/common_core_tax_amnesty_voting.html>