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_15 (engine VARCHAR, entrant VARCHAR, year VARCHAR, points VARCHAR)
### Question:
What engine was used by Equipe Simca Gordini before 1956 with less than 4 points?
### Answer:
SELECT engine FROM table_name_15 WHERE year < 1956 AND points < 4 AND entrant = "equipe simca gordini"