<http://schema.org/thumbnailURL>
"http://d28hgpri8am2if.cloudfront.net/book_images/onix/cvr9781416554042/the-summer-of-1787-9781416554042_th.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://books.simonandschuster.com/The-Summer-of-1787/David-O-Stewart/9781416554042>