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

### Instruction:
What is the score of the game on September 13 when the Expos were the opponent?

### Inputs:
table_name: table, columns: ['Date', 'Opponent', 'Score', 'Loss', 'Save']

### Response:
SELECT Score FROM table WHERE Opponent = expos AND Date = september 13