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

### Instruction:
Who was the challenger on Episode 5?

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

### Response:
SELECT Challenger FROM table WHERE Overall Episode # = 5