TASK DEFINITION: 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.
PROBLEM: potatoes : sack. money : ?

SOLUTION: wallet

PROBLEM: poster : tube. water : ?

SOLUTION: bottle

PROBLEM: water : bottle. poster : ?

SOLUTION:
tube