<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x400/54cb16a35e3f4_-_hyperloop-02-0713-de.jpg>
<http://www.popularmechanics.com/technology/infrastructure/a9225/hyperloop-and-friends-why-dont-we-have-super-high-speed-rail-already-15710308/>