<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54cfd65050bc9_-_kulluk-feature-01-0213-smn.jpg>
<http://www.popularmechanics.com/science/energy/a8750/anatomy-of-an-offshore-oil-rig-15152665/>