Two analogies that relate objects to the associated rooms is given in the form "A : B. C : ?". "A : B" relates object A to room B. Your task is to replace the question mark (?) with the appropriate room for the given object C, following the "A : B" relation.

[Q]: cupboard : kitchen. shower : ?
[A]: bathroom


[Q]: cupboard : kitchen. bookshelf : ?
[A]: library


[Q]: shelf : kitchen. microwave : ?
[A]:
kitchen