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:
type : keyboard. clamp : ?
answer:
clamp


question:
unlock : key. crack : ?
answer:
nutcracker


question:
wash : soap. clamp : ?
answer:

clamp