What is the lowest week that has September 19, 1965 as the date, with an attendance less than 46,941?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "attendance" real
);
SELECT MIN("week") FROM "schedule" WHERE "date"='september 19, 1965' AND "attendance"<'46,941';