<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cae9bb55a97_-_alterna-cycles-11-0412-de.jpg>
<http://www.popularmechanics.com/cars/motorcycles/g831/10-extreme-alternative-motorcycles/>