<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x322/54d11d6661f7b_-_fuel_efficient_cars_08_1210-xl-58520720.jpg>
<http://www.popularmechanics.com/cars/g457/top-10-most-fuel-efficient-2011-small-cars/>