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 (used VARCHAR, power__hp_ VARCHAR, engine VARCHAR)
### Question:
When was power (hp) less than 93 for the OM324 engine used?
### Answer:
SELECT used FROM table_name_4 WHERE power__hp_ < 93 AND engine = "om324"