<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54cfcac5b8393_-_dads_tools_10_0910-md-63225759.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g378/tools-gifts/>