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.
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Question: vitamins : bottle. chips : ?

Answer: bag


Question: ketchup : bottle. vitamins : ?

Answer: bottle


Question: poster : tube. chips : ?

Answer:
bag