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.

[EX Q]: sink : kitchen. bookshelf : ?
[EX A]: library

[EX Q]: couch : parlor. cabinet : ?
[EX A]: bathroom

[EX Q]: refrigerator : kitchen. closet : ?
[EX A]:
hallway