<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x551/54ff85bbe2f2b-ghk-fitbug-orb-s2.jpg>
<http://www.goodhousekeeping.com/health-products/health-tracker-reviews/g1502/ces-2014-health-trackers/>