How many first downs were there when the attendance was 13196?
CREATE TABLE "schedule" (
  "game" real,
  "date" text,
  "opponent" text,
  "result" text,
  "packers_points" real,
  "opponents" real,
  "first_downs" real,
  "record" text,
  "streak" text,
  "venue" text,
  "attendance" real
);
SELECT MIN("first_downs") FROM "schedule" WHERE "attendance"=13196;