<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/480x552/54ff67fd60272-02-ghk-winter-proof-home-icicles-mcz7mf-xln.jpg>
<http://www.goodhousekeeping.com/health/fitness/g1325/calorie-burning-winter-activities/>