Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_92 (format VARCHAR, region VARCHAR, date VARCHAR)
### Question:
Which format had a United States region and a date of August 11, 2009?
### Answer:
SELECT format FROM table_name_92 WHERE region = "united states" AND date = "august 11, 2009"