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.

Input: Consider Input: bookshelf : hallway. refrigerator : ?

Output: kitchen


Input: Consider Input: toolbox : shed. pantry : ?

Output: kitchen


Input: Consider Input: recliner : den. refrigerator : ?


Output: kitchen