CREATE TABLE "production" (
  "fiscal_year" real,
  "2_car_sets" real,
  "4_car_sets" real,
  "6_car_sets" real,
  "8_car_sets" real,
  "total_vehicles" real
);

Question: What is the smallest 8-car sets if 4-car sets is 47?
SQL: SELECT MIN("8_car_sets") FROM "production" WHERE "4_car_sets"=47;

Question: What is the largest 6-car-sets for fiscal year 1968?
SQL: SELECT MAX("6_car_sets") FROM "production" WHERE "fiscal_year"=1968;

Question: What is the lowest fiscal year if total vehicles is 490?
SQL: SELECT MIN("fiscal_year") FROM "production" WHERE "total_vehicles"=490;