Classify the below based on the mode of transportation.
bus, car, taxi, train, helicopter, boat, ship
Travel by land- bus, car, taxi, train
Travel by water- boat, ship
Travel by air- helicopter
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Classify the below based on the mode of transportation.
bus, car, taxi, train, helicopter, boat, ship
### Input: 
### Response: Travel by land- bus, car, taxi, train
Travel by water- boat, ship
Travel by air- helicopter