<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/320x240/54cfd1e545a9d_-_arctic-challenge-02-0812-de.jpg>
<http://www.popularmechanics.com/science/environment/g921/americas-arctic-challenge/>