<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://esq.h-cdn.co/assets/cm/15/07/160x160/54da53993371e_-_oz-3-heart-rate-monitor-0809-lg-23118741.jpg>
<http://www.esquire.com/lifestyle/health/g451/heart-health-030310/>