<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb289910def_-_weird-bikes-05-0214-de.jpg>
<http://www.popularmechanics.com/adventure/outdoors/g1422/8-of-the-worlds-weirdest-bicycles/>