<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x160/54cb19b11b33a_-_weird-fitness-01-0813-de.jpg>
<http://www.popularmechanics.com/technology/apps/reviews/g1295/5-fitness-apps-from-off-the-beaten-path/>