<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x320/54cb169b4ad56_-_zippo-wallet-01-0713-de.jpg>
<http://www.popularmechanics.com/technology/gadgets/a9214/stainless-steel-spending-the-zippo-wallet-15710278/>