<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/480x552/54feb5c5c952b-headphones-1-xl.jpg>
<http://www.goodhousekeeping.com/electronics/headphone-reviews/g234/headphone-reviews-1/>