What is 1987-88, when Points is "136"?
CREATE TABLE "relegation" (
  "team" text,
  "average" real,
  "points" real,
  "played" real,
  "1986_87" text,
  "1987_88" text,
  "1988_89" real
);
SELECT "1987_88" FROM "relegation" WHERE "points"=136;