<http://schema.org/thumbnailURL>
"http://d28hgpri8am2if.cloudfront.net/book_images/cvr9780892813179_9780892813179_th.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://books.simonandschuster.com/The-Way-of-Sufi-Chivalry/Toscun-Bayrak-al-Jerrahi/9780892813179>