<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/480x552/54ff85bd2c270-ghk-basis-carbon-steel-xl.jpg>
<http://www.goodhousekeeping.com/health-products/health-tracker-reviews/g1502/ces-2014-health-trackers/>