<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/13/24/160x106/gallery_gaming-playstation-4-sony-rear-of-console-e3-2013.jpg>
<http://www.digitalspy.com/gaming/news/g18188/playstation-4-ps4-hardware-gallery/>