Question: Casualty had to be rescheduled on March 30, 2002, due to the death of which wife of King George VI?
Sentence (from "Casualty (series 16)"): The sixteenth series of the British medical drama television series "Casualty" commenced airing in the United Kingdom on BBC One on 15 September 2001 and finished on 29 June 2002.
Relevant evidence: No