Two analogies that relate actions to the tools used to perform the action is given in the form "A : B. C : ?". "A : B" relates action A to tool B. Your task is to replace the question mark (?) with the appropriate tool for the given action C, following the "A : B" relation.

[Q]: type : keyboard. wash : ?
[A]: soap


[Q]: sweep : broom. crack : ?
[A]: nutcracker


[Q]: spread : knife. wash : ?
[A]:
soap