What is the frequency of the station that was launched on 21 August 1994?
CREATE TABLE table_name_97 (
    frequency VARCHAR,
    launched VARCHAR
)
SELECT frequency FROM table_name_97 WHERE launched = "21 august 1994"
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 is the frequency of the station that was launched on 21 August 1994? ### Input: CREATE TABLE table_name_97 (
    frequency VARCHAR,
    launched VARCHAR
) ### Response: SELECT frequency FROM table_name_97 WHERE launched = "21 august 1994"