<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cb03cb25ef1_-_high-tech-vending-machines-07-1220-lgn.jpg>
<http://www.popularmechanics.com/technology/g1041/8-high-tech-vending-machines/>