<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/768x516/54cae3e764364_-_frozen-planet-05-0312-xln.jpg>
<http://www.popularmechanics.com/culture/tv/g813/the-5-biggest-challenges-of-filming-discovery-channels-frozen-planet/>