<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbz.h-cdn.co/assets/cm/15/04/480x436/54bc972aa7ca9_-_hbz-may-2013-james-turrell-roden-crater-landscape-de.jpg>
<http://www.harpersbazaar.com/culture/features/g2667/james-turrell-interview-0513/>