<http://schema.org/image_url>
"http://media.nola.com/politics/photo/alaska-ballot-countjpg-679067c5b20b3439.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.nola.com/politics/index.ssf/2010/11/lisa_murkowski_camp_cries_foul.html>