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]: spread : knife. dig : ?
[A]: shovel


[Q]: bake : oven. toast : ?
[A]: toaster


[Q]: vacuum : vacuum. mop : ?
[A]:
mop