<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x322/54cab4eb88f74_-_green_build_06_1110-xl-68922265.jpg>
<http://www.popularmechanics.com/science/environment/g421/top-7-green-products-from-greenbuild-2010/>