CREATE TABLE table_name_56 (constructor VARCHAR, time_retired VARCHAR, laps VARCHAR)

Who constructed the car that has a Time/Retired of engine, and over 50 laps?
SELECT constructor FROM table_name_56 WHERE time_retired = "engine" AND laps > 50
SELECT "constructor" FROM "table_name_56" WHERE "engine" = "time_retired" AND "laps" > 50