<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x658/54ff3e6ec2d39-0414-eliminate-paper-clutter-key-hook-s2.jpg>
<http://www.goodhousekeeping.com/home/organizing/tips/g1014/eliminate-your-paper-clutter/>