instruction:
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.
question:
cut : sword. mop : ?
answer:
mop


question:
unlock : key. vacuum : ?
answer:
vacuum


question:
stir : spoon. crack : ?
answer:

nutcracker