<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x240/54cb0ee6981ff_-_angle-grinder-tool-test-04-0413-de.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g1161/7-tough-right-angle-grinders-tested/>