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 : Design of the MILAN started in 1962, it was ready for trials in 1971, and was accepted for service in 1972. 
Answer : 1972

A: What year was the service entry date for MILAN?
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Q: Context : An RGB color space is any additive color space based on the RGB color model. 
Answer : RGB color model

A: The RGB color space is based upon what?
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Q: Context : If Death Ever Slept is a Nero Wolfe detective novel by Rex Stout, published by the Viking Press in 1957 and collected in the omnibus volume Three Trumps (Viking 1973). 
Answer : Nero Wolfe

A:
Which series is If Death Ever Slept apart of?
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