What was the date of the game played at Gillette Stadium with a score of 40-21?
CREATE TABLE table_name_97 (
    date VARCHAR,
    location VARCHAR,
    result VARCHAR
)
SELECT date FROM table_name_97 WHERE location = "gillette stadium" AND result = "40-21"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the date of the game played at Gillette Stadium with a score of 40-21? ### Input: CREATE TABLE table_name_97 (
    date VARCHAR,
    location VARCHAR,
    result VARCHAR
) ### Response: SELECT date FROM table_name_97 WHERE location = "gillette stadium" AND result = "40-21"