system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Classify the below based on the mode of transportation.
bus, car, taxi, train, helicopter, boat, ship


assistant
Travel by land- bus, car, taxi, train
Travel by water- boat, ship
Travel by air- helicopter