<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/10/320x426/54f5fe0e6629a_-_01-stack-of-books-lgn-17589344.jpg>
<http://www.womansday.com/life/work-money/tips/g1266/cheap-school-supplies/>