<http://schema.org/image_url>
"http://media.al.com/birmingham-news/photo/2009/08/2e9e10e2d90ae27ddac6e4b0d7d69033.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://photos.al.com/4461/gallery/Baseball%20Museum/index.html>