<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/10/14/cult_doctor_who_s05e04_1.jpg>
<http://www.digitalspy.com/tv/doctor-who/news/a372359/doctor-who-weeping-angels-return-for-amy-and-rory-exit/>