Which supercharger gear ratio has a Octane rating of 68?
CREATE TABLE table_name_22 (
    supercharger_gear_ratio VARCHAR,
    octane_rating VARCHAR
)
SELECT supercharger_gear_ratio FROM table_name_22 WHERE octane_rating = "68"
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: Which supercharger gear ratio has a Octane rating of 68? ### Input: CREATE TABLE table_name_22 (
    supercharger_gear_ratio VARCHAR,
    octane_rating VARCHAR
) ### Response: SELECT supercharger_gear_ratio FROM table_name_22 WHERE octane_rating = "68"