<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cb17e469401_-_bho-jetpacks-04-0713-lgn.jpg>
<http://www.popularmechanics.com/flight/g1267/a-brief-history-of-the-jetpack/>