<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54caecd02f8c3_-_oil-boom-02-0612-smn.jpg>
<http://www.popularmechanics.com/science/energy/a7700/fracking-illustrated-a-guide-to-shale-oil-extraction-9654630/?src=rss>