<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/480x360/548a4b24f3f04_-_tip-7-rewardlgn.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1030/start-workout-fitness/>