<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb19b1dae40_-_weird-fitness-04-0813-lgn.jpg>
<http://www.popularmechanics.com/technology/apps/reviews/g1295/5-fitness-apps-from-off-the-beaten-path/>