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

### Instruction:
Who was the winner when the iron chef is hiroyuki sakai?

### Inputs:
table_name: table, columns: ['Special', 'Original airdate', 'Iron Chef', 'Challenger', 'Challenger Specialty', 'Theme Ingredient', 'Winner']

### Response:
SELECT Winner FROM table WHERE Iron Chef = Hiroyuki Sakai