<http://schema.org/image_url>
"http://media.masslive.com/republican/photo/2014/01/penguin-plunge-small-4zip-b3228447e45eef51jpg-aa6883a2c5d348b6.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.masslive.com/4502/gallery/penguin_plunge/index.html>