<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb1bf66e96c_-_fitness-monitors-04-0913-de.jpg>
<http://www.popularmechanics.com/adventure/sports/g1310/5-fitness-monitors-to-track-your-workout/>