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

### Instruction:
Which format had a United States region and a date of August 11, 2009?

### Inputs:
table_name: table, columns: ['Region', 'Date', 'Label', 'Format', 'Catalogue']

### Response:
SELECT Format FROM table WHERE Region = united states AND Date = august 11, 2009