<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/640x480/54cfcfc632ebf_-_byfr-12-basictopwiring-de.jpg>
<http://www.popularmechanics.com/technology/robots/a7388/build-your-first-robot/>