<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x322/54d120c711b54_-_circular_saws_11_1110-xl-66321549.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g144/11-circular-saw-comparison-test/>