<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/12/21/980x551/gallery_gaming_the_cave_screenshot_1.jpg>
<http://www.digitalspy.com/gaming/news/a383440/the-cave-unveiled-by-double-fine-and-sega-ron-gilbert-at-the-helm/>