<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54d0e86a4b3d5_-_rolling_cart_05_0211-md.jpg>
<http://www.popularmechanics.com/home/how-to-plans/how-to/a6437/build-this-rolling-wood-cabinet-plans/>