<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x320/54cb16a48cedc_-_hyperloop-01-0713-de.jpg>
<http://www.popularmechanics.com/technology/infrastructure/a9225/hyperloop-and-friends-why-dont-we-have-super-high-speed-rail-already-15710308/>