<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb2126306f9_-_tool-gifts-08-1113-de.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g1358/12-great-tool-gifts-for-diyers/>