<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb1ad787c5f_-_a-drone-for-every-purpose-05-0913-lgn.jpg>
<http://www.popularmechanics.com/military/g1282/a-drone-for-every-purpose/>