Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
If the winner is Bernhard Eisel, what is the stage maximum?

### Inputs:
table_name: table, columns: ['Stage', 'Winner', 'General classification', 'Mountains classification', 'Points classification', 'Sprints classification', 'Team classification']

### Response:
SELECT MAX Stage FROM table WHERE Winner = Bernhard Eisel