What week was the game played on November 12, 1961, with an attendance of 7,859 played?
CREATE TABLE "regular_season" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "game_site" text,
  "record" text,
  "attendance" real
);
SELECT MIN("week") FROM "regular_season" WHERE "date"='november 12, 1961' AND "attendance"<'7,859';