<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x240/54cb18d45cb45_-_rotary-tools-03-0813-de.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g1255/can-anyone-top-the-dremel-6-rotary-tools-tested/>