<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/768x516/54cb643e9938b_-_ixtoc1spill_500_0510-xln.jpg>
<http://www.popularmechanics.com/science/energy/g1765/biggest-oil-spills-in-history/?click=main_sr>