<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x360/54cb3d1568cd1_-_old-tools-05-0614-de.jpg>
<http://www.popularmechanics.com/home/tools/reviews/a10746/when-good-tools-die-young-16930312/>