Two analogies that relate places/locations to the associated travel mode is given in the form "A : B. C : ?". "A : B" relates place A to travel mode B. Your task is to replace the question mark (?) with the appropriate travel mode for the given place C, following the "A : B" relation.

Example input: moon : rocket. france : ?
Example output: airplane
Example explanation: Rockets are used to travel to the moon - hence the given analogy relates places/locations to the associated travel mode , and the answer also does the same
Q: office : car. museum : ?
A:
bus