<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cae9249ef03_-_the-iron-way-02-0412-lgn.jpg>
<http://www.popularmechanics.com/adventure/outdoors/g819/the-tools-of-via-ferrata-rock-climbing/>