<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/640x430/54fe7163e4e32-sofa-4-xl.jpg>
<http://www.goodhousekeeping.com/home/decorating-ideas/tips/a16148/spruce-up-sofa-jan07/>