<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x360/54cfcd5a31ab0_-_macbookunbox-13-500-lg.jpg>
<http://www.popularmechanics.com/technology/gadgets/g381/macbook-air-unboxed-pictures/>