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]: microwave : kitchen. sofa : ?
[A]: parlor


[Q]: bookshelf : library. nightstand : ?
[A]: bedroom


[Q]: bookshelf : library. shower : ?
[A]:
bathroom