<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/12/25/screen-shot-2012-06-18-at-17.10>
<http://www.digitalspy.com/music/news/a388119/katy-perry-debuts-wide-awake-music-video-watch/>