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.

Q: Context : ``The Next Witness'' is a Nero Wolfe mystery novella by Rex Stout, first published as ``The Last Witness'' in the May 1955 issue of The American Magazine. 
Answer : Nero Wolfe

A: The The Next Witness has what character?
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Q: Context : Bat Conservation International (BCI) is an international non-governmental organization working to conserve the world's bats and their habitats through conservation, education and research efforts. 
Answer : conservation

A: Which industry is Bat Conservation International associated with?
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Q: Context : Fred F. Castle Jr. is a retired Brigadier General in the United States Air Force Reserve Command. 
Answer : United States Air Force

A:
Which armed forces utilised the service of Fred F. Castle Jr.?
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