<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/480x322/54ebb861a27a1_-_2-heart-rate-monitor-xl.jpg>
<http://www.womansday.com/health-fitness/workout-routines/advice/g1172/best-exercises/?click=smart&kw=ist&src=smart&mag=WDY&link=-SMT-WDY>