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_54 (date VARCHAR, length_duration VARCHAR)
### Question:
What was the date of the race that lasted 6 hours?
### Answer:
SELECT date FROM table_name_54 WHERE length_duration = "6 hours"