<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cac303f2500_-_shower-power-03-0511-smn.jpg>
<http://www.popularmechanics.com/home/how-to/a6622/whats-behind-your-shower-walls/>