<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x400/54cac5acc63b5_-_mileage-tips-05-0511-de.jpg>
<http://www.popularmechanics.com/cars/a6827/6-driving-tactics-to-save-gas-this-weekend/>