Two analogies on manipulating items in a kitchen is given in the form "A : B. C : ?". The phrase "A : B" relates item A to its appropriate manipulation B. Your task is to replace the question mark (?) with the appropriate manipulation of item C, following the "A : B" relation. Your answer should be a verb which shows a way to manipulate the given object.

Example Input: peas : shell. safe : ?
Example Output: unlock

Example Input: bag : unzip. peanut : ?
Example Output: shell

Example Input: pump : pump. bag : ?
Example Output:
open