<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb05ff9b850_-_2013-outdoor-tech-01-0113-de.jpg>
<http://www.popularmechanics.com/adventure/outdoors/g1059/top-hiking-biking-camping-tech-for-2013/>