<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cb07f5bf97f_-_complicated-patents-02-0213-lgn.jpg>
<http://www.popularmechanics.com/technology/g1104/10-patents-that-make-simple-tasks-crazy-complicated/>