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_4 (class VARCHAR, frequency_mhz VARCHAR)
### Question:
Frequency MHz of 93.7 has what class?
### Answer:
SELECT class FROM table_name_4 WHERE frequency_mhz = 93.7