<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://roa.h-cdn.co/assets/cm/14/47/980x598/546b5b9ec9b57_-_driving-bmw-s-hydrogen-7-lg.jpg>
<http://www.roadandtrack.com/new-cars/car-technology/news/a13088/driving-bmws-hydrogen-7/>