How many were in attendance in a week less than 4 with a record of 2–1?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "game_site" text,
  "record" text,
  "attendance" text
);
SELECT "attendance" FROM "schedule" WHERE "week"<4 AND "record"='2–1';