<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/13/31/1280x1781/gallery_gaming-bioshock-infinite-dlc-screenshot-6.jpg>
<http://www.digitalspy.com/gaming/news/a530394/bioshock-infinite-burial-at-sea-creator-defends-length-of-dlc/>