Two analogies that relate items to the associated containers is given in the form "A : B. C : ?". "A : B" relates item A to its associated container B. Your task is to replace the question mark (?) with the appropriate container for the given item C, following the "A : B" relation.

Input: Consider Input: poster : tube. money : ?

Output: wallet


Input: Consider Input: diapers : bag. diapers : ?

Output: box


Input: Consider Input: ketchup : bottle. potatoes : ?


Output: sack