<http://schema.org/isbn>
"9781442438736"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.simonandschuster.com/books/Girls-to-the-Rescue-Young-Marians-Adventures-in-Sherwood-Forest/Stephen-Mooser/Girls-to-the-Rescue/9781442438736>