Name the 4 car sets for 6 car sets being 44
CREATE TABLE "production" (
  "fiscal_year" real,
  "2_car_sets" real,
  "3_car_sets" real,
  "4_car_sets" real,
  "6_car_sets" real,
  "8_car_sets" real,
  "total_vehicles" real
);
SELECT MIN("4_car_sets") FROM "production" WHERE "6_car_sets"=44;