<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb7f7fbcd83_-_neck-neck-rolls-a-mdn.jpg>
<http://www.womansday.com/health-fitness/workout-routines/advice/g138/pain-proof-your-body-workout-routine-85554/>