<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.popularmechanics.com/science/energy/a7700/fracking-illustrated-a-guide-to-shale-oil-extraction-9654630/?src=rss>