An answer is given. Generate a question for which the given answer is either a direct or partial answer.

[EX Q]: Answer: it happened one night
[EX A]: what films had both leading actor and actress win an oscar?

[EX Q]: Answer: narwhal
[EX A]: what is the narwhal populations in 2010?

[EX Q]: Answer: robert anderson (civil war)
[EX A]:
who was the confederate commander during the battle of fort sumter?