<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54ffce8bbb2b5-glam-heartbeats.png>
<http://www.goodhousekeeping.com/institute/a24131/new-headphones-to-help-you-feel-the-beat/?src=shelter_footer>