<http://schema.org/image_url>
"http://media.masslive.com/republican/photo/2010/05/-2430680455b78833.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.masslive.com/sports/index.ssf/2011/03/boston_red_sox_shortstop_marco_1.html>