<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54ca6c5b4dfe1_-_05-livescribe-470-0608-93149234.jpg>
<http://www.popularmechanics.com/technology/gadgets/reviews/a3353/4268553/>