Which class had a number under 4 and was built in 1988?
CREATE TABLE table_name_52 (
    class VARCHAR,
    number VARCHAR,
    built VARCHAR
)
SELECT class FROM table_name_52 WHERE number < 4 AND built = "1988"
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: Which class had a number under 4 and was built in 1988? ### Input: CREATE TABLE table_name_52 (
    class VARCHAR,
    number VARCHAR,
    built VARCHAR
) ### Response: SELECT class FROM table_name_52 WHERE number < 4 AND built = "1988"