human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Year, Entrant, Chassis, Engine, Points
###Question: What engine was used by Equipe Simca Gordini before 1956 with less than 4 points?
gpt
SELECT Engine FROM table WHERE Year < 1956 AND Points < 4 AND Entrant = equipe simca gordini