<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cafbc59a2bc_-_unusual-tools-08-1112-de.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g975/8-unique-tools-and-their-unusual-uses/>