<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/320x344/54ff604ca6416-butterflylinens-de.jpg>
<http://www.goodhousekeeping.com/home/decorating-ideas/g1215/butterfly-themed-products/>