What was the average if the game played during 1990-91 is 40 and the points are less than 121.0?
CREATE TABLE "relegation" (
  "team" text,
  "average" text,
  "points" real,
  "played" real,
  "1988_89" text,
  "1989_90" text,
  "1990_1991" real
);
SELECT "average" FROM "relegation" WHERE "1990_1991"=40 AND "points"<121.0;