Who are the greatest hockey players of all time?
The greatest hockey players of all time include Wayne Gretzky, Mario Lemieux, Bobby Orr, and Gordie Howe.
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: Who are the greatest hockey players of all time?
### Input: 
### Response: The greatest hockey players of all time include Wayne Gretzky, Mario Lemieux, Bobby Orr, and Gordie Howe.