<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x725/54cac302a883a_-_shower-power-01a-0511-de.jpg>
<http://www.popularmechanics.com/home/how-to/a6622/whats-behind-your-shower-walls/>