What is Brand, when Frequency is '640'?
CREATE TABLE table_name_68 (
    brand VARCHAR,
    frequency VARCHAR
)
SELECT brand FROM table_name_68 WHERE frequency = 640
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 Brand, when Frequency is '640'? ### Input: CREATE TABLE table_name_68 (
    brand VARCHAR,
    frequency VARCHAR
) ### Response: SELECT brand FROM table_name_68 WHERE frequency = 640