<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54ff793bb2fd9-ghk-reader-playset-after-de.jpg>
<http://www.goodhousekeeping.com/home/craft-ideas/how-to/a22106/playset-before-and-after/>