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

### Instruction:
On what date was the game played at home against the opponent Siena?

### Inputs:
table_name: table, columns: ['Date', 'Time', 'Round', 'Opponent', 'Ground', 'Score']

### Response:
SELECT Date FROM table WHERE Opponent = siena AND Ground = home