<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb1aea77a35_-_drone-skies-02-0913-de.jpg>
<http://www.popularmechanics.com/military/a9407/drone-skies-the-unmanned-aircraft-revolution-is-coming-15894155/>