CREATE TABLE "nsl_cup_winners" (
  "season" text,
  "cup_final_date" text,
  "winning_team" text,
  "score" text,
  "losing_team" text,
  "location" text,
  "cup_final_attendance" real
);

Question: How many losingteams were for the cup finaldate 20 August 1989?
SQL: SELECT COUNT("losing_team") FROM "nsl_cup_winners" WHERE "cup_final_date"='20 August 1989';

Question: How many seasons was the losing team Adelaide City?
SQL: SELECT COUNT("season") FROM "nsl_cup_winners" WHERE "losing_team"='Adelaide City';

Question: Who was the winning team in the 1989 season?
SQL: SELECT "winning_team" FROM "nsl_cup_winners" WHERE "season"='1989';