<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://cos.h-cdn.co/assets/14/31/1406737854-tumblr_inline_mxw2xmib4i1rpl29c.gif>
<http://www.cosmopolitan.com/health-fitness/advice/a29580/workouts-that-burn-more-calories-than-jogging/>