<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/10/160x160/54f5fd0643d67_-_1-older-couple-piggyback-ride-275-33247816.jpg>
<http://www.womansday.com/health-fitness/womens-health/advice/g1140/how-to-live-longer/>