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.

Ex Input:
diapers : box. vitamins : ?

Ex Output:
bottle


Ex Input:
kleenex : box. poster : ?

Ex Output:
tube


Ex Input:
ketchup : bottle. milk : ?

Ex Output:

jug