<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cad34f58891_-_breakthrough-06-rovers-1011-smn.jpg>
<http://www.popularmechanics.com/cars/a7167/the-lighter-better-more-efficient-two-stroke-engine/>