<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x240/54cb09cd72a86_-_quarter-sheet-sanders-05-0213-lgn.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g1095/tool-test-11-quarter-sheet-sanders/>