<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/480x552/54ebb0e8b0b27_-_woman-shopping-mall-xl.jpg>
<http://www.womansday.com/health-fitness/how-to/g1043/how-to-burn-calories/>