<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb1503e87a3_-_7-wireless-speakers-04-0613-de.jpg>
<http://www.popularmechanics.com/technology/gadgets/reviews/g1227/7-wireless-speakers-to-take-your-beats-outdoors/>