<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x240/54cb03cad1c4d_-_high-tech-vending-machines-06-1220-de.jpg>
<http://www.popularmechanics.com/technology/g1041/8-high-tech-vending-machines/>