<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54ca65ea7f292_-_pmx0711_gadgets62-lgn.jpg>
<http://www.popularmechanics.com/technology/gadgets/reviews/g165/101-gadgets-that-changed-the-world/?click=main_sr>