<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x360/54cfd31298224_-_steam-trains-06-0513-de.jpg>
<http://www.popularmechanics.com/technology/infrastructure/g1142/in-search-of-steam-12-of-the-worlds-classic-trains/>