<http://schema.org/image_url>
"http://media.al.com/business_impact/photo/7200-redstone-gatewayjpg-38c440c3b21ddbbf.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/business/index.ssf/2014/08/defense_technology_firm_drs_si.html>