<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbu.h-cdn.co/assets/cm/15/04/54c1611c3b8ea_-_04-hbx-japanese-inspired-bunk-beds-1211-de.jpg>
<http://www.housebeautiful.com/lifestyle/kids-pets/g1806/cool-bunk-beds/>