<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fea53acb32d-ll-bean-super-deluxe-book-pack-0810-md.jpg>
<http://www.goodhousekeeping.com/childrens-products/kids-backpack-reviews/a18788/backpack-reviews/>