What is the lowest Attendance, when Date is "February 4", and when Points is less than 57?
CREATE TABLE "regular_season" (
  "date" text,
  "opponent" text,
  "score" text,
  "loss" text,
  "attendance" real,
  "record" text,
  "arena" text,
  "points" real
);
SELECT MIN("attendance") FROM "regular_season" WHERE "date"='february 4' AND "points"<57;