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.

[EX Q]: drawer : open. faucet : ?
[EX A]: turn

[EX Q]: jar : open. shoe : ?
[EX A]: untie

[EX Q]: walnut : shell. box : ?
[EX A]:
open