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

### Instruction:
List the original air date for week 5.

### Inputs:
table_name: table, columns: ['No.', '#', 'Title', 'Directed by', 'Written by', 'U.S. viewers (million)', 'Rank (week)', 'Original air date']

### Response:
SELECT Original air date FROM table WHERE Rank (week) = 5