<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/768x516/54ca63bc422d4_-_sander_test_01_1110-xl-52023544.jpg>
<http://www.popularmechanics.com/home/tools/reviews/g148/random-orbital-sander-comparison-test/?click=main_sr>