<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fe4d5483571-hbx-upside-down-house-de1.jpg>
<http://www.goodhousekeeping.com/home/a15231/upside-down-house-china/>