<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/320x368/54d122ad594e8_-_prototype-engines-04-0511-xl.jpg>
<http://www.popularmechanics.com/cars/g523/6-prototype-engines-to-get-your-brain-firing/>