<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/160x120/54caa14e8a293_-_canssafe_200_0410-mdn.jpg>
<http://www.popularmechanics.com/technology/gadgets/reviews/g278/secret-safes-to-hide-valuables/>