<http://schema.org/image_url>
"http://media.al.com/news_impact/photo/image3gif-937560b01804c8ca.gif"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.al.com/news/index.ssf/2014/07/cold_air_sets_new_record_low_t.html>