<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cb075ef03c3_-_top-ski-tech-09-0213-de.jpg>
<http://www.popularmechanics.com/adventure/sports/g1062/upgrade-the-slopes-with-the-years-top-ski-tech/>