<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbu.h-cdn.co/assets/cm/15/04/980x551/54c1611cd1f7d_-_06-hbx-brown-white-bunk-bed-1013-de.jpg>
<http://www.housebeautiful.com/lifestyle/kids-pets/g1806/cool-bunk-beds/>