<http://schema.org/image_url>
"http://media.silive.com/northshore/photo/tennisjpg-60da1056c16fc2b2.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.silive.com/northshore/index.ssf/2012/06/free_sports_lessons_on_all_4_s.html>