<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb1dfeb9506_-_diy-drones-01-1013-de.jpg>
<http://www.popularmechanics.com/flight/drones/how-to/a9598/the-art-of-flying-your-very-own-drone-16068825/>