<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/768x516/54ffa312ec5a1-eatsmart-precision-digital-silver-bathroom-scale-xl.jpg>
<http://www.goodhousekeeping.com/health-products/bathroom-scale-reviews/g2108/best-bathroom-scales-2009/>