What is the largest week number for the venue of League Park for the date of November 25, 1920?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "venue" text,
  "attendance" text,
  "record" text
);
SELECT MAX("week") FROM "schedule" WHERE "venue"='league park' AND "date"='november 25, 1920';