<http://schema.org/thumbnailURL>
"http://d28hgpri8am2if.cloudfront.net/book_images/onix/cvr9781442409736/sign-of-the-dove-9781442409736_th.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.simonandschuster.com/books/Sign-of-the-Dove/Susan-Fletcher/9781442409736>