<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/13/45/160x80/landscape_tech-doctor-who-sonic-screwdriver.jpeg>
<http://www.digitalspy.com/tech/doctor-who/news/a529424/doctor-who-sonic-screwdriver-app-for-iphone-launched-by-bbc-worldwide/>