How many people attended the game that lost 2-4 and the date was higher than 15?
CREATE TABLE "september" (
  "date" real,
  "opponent" text,
  "venue" text,
  "result" text,
  "attendance" real,
  "competition" text
);
SELECT COUNT("attendance") FROM "september" WHERE "result"='lost 2-4' AND "date">15;