<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54cb152100144_-_pool-gadgets-03-0613-de.jpg>
<http://www.popularmechanics.com/technology/gadgets/reviews/g1215/7-water-loving-gadgets-to-pump-up-your-pool-party/>