<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x450/54cafbbe02039_-_awd-motorcycle-02-1112-de.jpg>
<http://www.popularmechanics.com/cars/motorcycles/a8247/how-to-build-an-all-wheel-drive-motorcycle-14466480/>