<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54cfbc050bb69_-_10-10wiiwant_tetris_0608_470-3541111.jpg>
<http://www.popularmechanics.com/culture/gaming/a12121/4270428/>