Definition: 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.

Positive Example 1 -
Input: eat : fork. cook : ?
Output: pan

Positive Example 2 -
Input: wash : rag. mop : ?
Output: mop

Negative Example 1 -
Input: dig : shovel. wash : ?
Output: sink

Negative Example 2 -
Input: drill : drill. crack : ?
Output: shovel

Now complete the following example -
Input: iron : iron. cut : ?
Output: 

