<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x1470/54ff1e256ffd0-ghk-lg-self-cleaning-oven-s2.jpg>
<http://www.goodhousekeeping.com/electronics/g783/ces-connected-home-tech-2013/>