<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/15/05/nrm_1422569093-250cc-test-01-0511-mdn.jpg>
<http://www.popularmechanics.com/cars/motorcycles/g147/how-to-get-started-picking-the-right-250cc-motorcycle/>