Which FA Cup that has a League Cup larger than 3 and a League smaller than 16?
CREATE TABLE "top_scorers_in_order_of_league_goals" (
  "player" text,
  "club" text,
  "league" real,
  "fa_cup" real,
  "fa_trophy" real,
  "league_cup" real,
  "total" real
);
SELECT AVG("fa_cup") FROM "top_scorers_in_order_of_league_goals" WHERE "league_cup">3 AND "league"<16;