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_9 (class VARCHAR, year VARCHAR, road_number VARCHAR)
### Question:
Which class starts after 1939 and has a road number smaller than 3508?
### Answer:
SELECT class FROM table_name_9 WHERE year > 1939 AND road_number < 3508