<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cb677429a9e_-_from-virtual-to-reality-02-0514-lgn.jpg>
<http://www.popularmechanics.com/technology/gadgets/g1784/from-virtual-to-reality-60-years-of-vr/>