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.

Example Input: desk : office. toolbox : ?
Example Output: garage

Example Input: closet : bedroom. nightstand : ?
Example Output: bedroom

Example Input: shelf : pantry. pantry : ?
Example Output:
kitchen