<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54d11f821181e_-_tools-cold-chisel-md.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g1760/50-tools-everyone-should-own/>