<http://schema.org/thumbnailURL>
"http://d28hgpri8am2if.cloudfront.net/book_images/onix/cvr9780684833279/public-opinion-9780684833279_th.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://books.simonandschuster.com/Public-Opinion/Walter-Lippmann/9780684833279>