instruction:
Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
question:
Context : Mainova AG was formed in 1998 through the merger of Stadtwerke Frankfurt am Main GmbH and Maingas AG. 
Answer : Stadtwerke Frankfurt
answer:
What is Mainova's parent company?


question:
Context : Who the (Bleep) Did I Marry? is an American documentary television series on Investigation Discovery. 
Answer : Investigation Discovery
answer:
What channel aired Who the (Bleep) Did I Marry??


question:
Context : The Battle of the Denmark Strait was a Second World War naval battle between ships of the Royal Navy and the German Kriegsmarine, fought on 24 May 1941. 
Answer : 24 May 1941
answer:

What is the full date that Battle of the Denmark Strait crashed on?