<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fea55335563-0811-mailbox-with-letters-md.jpg>
<http://www.goodhousekeeping.com/home/organizing/tips/a18758/home-and-office-organization/>