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

### Instruction:
How many iron chefs were there when the challenge specialty was Japanese cuisine?

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

### Response:
SELECT COUNT Iron Chef FROM table WHERE Challenger Specialty = Japanese