<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/980x1252/548fe89f419c6_-_rbk-fitness-apps-nike--training-club-s2.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1439/fitness-apps/>