<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb7c77bb711_-_hurdles-mdn.jpg>
<http://www.womansday.com/health-fitness/workout-routines/advice/g86/10-olympics-inspired-workouts-6608/>