<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/08/640x320/54e9a5d36bff2_-_cl-dog-de.jpg>
<http://www.countryliving.com/life/kids-pets/a109/dogs-distinguish-happy-angry-emotions-humans/>