how many times is the fa cup apps more than 0, the position mf and the league goals 4?
CREATE TABLE "appearances_and_goals" (
  "name" text,
  "position" text,
  "league_apps" text,
  "league_goals" real,
  "fa_cup_apps" real,
  "fa_cup_goals" real,
  "league_cup_apps" text,
  "league_cup_goals" real,
  "total_apps" text,
  "total_goals" real
);
SELECT COUNT("total_goals") FROM "appearances_and_goals" WHERE "fa_cup_apps">0 AND "position"='mf' AND "league_goals"=4;