<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/10/980x1346/54f5ff5955744_-_02-group-of-women-walking-s2.jpg>
<http://www.womansday.com/health-fitness/workout-routines/advice/g1379/burn-calories-fast/>