<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x400/54cb3b8484f1a_-_qapicasso-02-0614-de.jpg>
<http://www.popularmechanics.com/science/a10820/discovering-a-hidden-picasso-16904979/>