<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb3381ec5e0_-_inflatable-space-station-06-0514-de.jpg>
<http://www.popularmechanics.com/space/g1506/step-inside-the-inflatable-space-station/>