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

### Instruction:
Who is the opponent for the winner outcome on a hard surface on August 27, 2011?

### Inputs:
table_name: table, columns: ['Outcome', 'Date', 'Surface', 'Opponent', 'Score']

### Response:
SELECT Opponent FROM table WHERE Outcome = winner AND Surface = hard AND Date = august 27, 2011