<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/160x120/54d11ed8ec8fb_-_wave-power-01-0411-md.jpg>
<http://www.popularmechanics.com/science/energy/g497/5-bright-ideas-to-capture-the-oceans-energy/>