<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://roa.h-cdn.co/assets/cm/14/47/546b72157cbb7_-_audi-city-etron-concept_th-lg.jpg>
<http://www.roadandtrack.com/car-shows/frankfurt-auto-show/news/a17479/official-sketches-revealed-audi-urban-concept/>