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_88 (branding VARCHAR, frequency VARCHAR)
### Question:
Tell me the branding for frequency of 680 khz
### Answer:
SELECT branding FROM table_name_88 WHERE frequency = "680 khz"