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: toolbox : shed. bookshelf : ?

A: library
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Q: desk : office. counter : ?

A: kitchen
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Q: sink : kitchen. sink : ?

A:
bathroom
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