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

### Instruction:
When did the episode originally air with a nick production number of 945?

### Inputs:
table_name: table, columns: ['Season #', 'Series #', 'Episode title', 'Original air date', 'Nick prod. #']

### Response:
SELECT Original air date FROM table WHERE Nick prod. # = 945