<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.digitalspy.com/tv/doctor-who/news/a377441/doctor-whos-steven-moffat-the-companion-is-the-main-character/>