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.

Q: work : car. downtown : ?

A: subway
****
Q: airport : taxi. cemetery : ?

A: hearse
****
Q: hospital : ambulance. washington : ?

A:
train
****