<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/160x142/54cb14fd2148d_-_revv2celestron_300x250_2-9huheg.png>
<http://www.popularmechanics.com/technology/gadgets/reviews/g1234/10-gadgets-ahead-of-their-time/?click=pp>