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

### Instruction:
Who was the mediator in kōhaku number 53?

### Inputs:
table_name: table, columns: ['Kōhaku #', 'Date', 'Red Team Host', 'White Team Host', 'Mediator', 'Winning Team']

### Response:
SELECT Mediator FROM table WHERE Kōhaku # = 53