<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/480x360/54ff0490aa4bb-ghk-manuel-robot-cleaner-lgn-32495404.jpg>
<http://www.goodhousekeeping.com/electronics/g555/connected-home-tech-2012/>