CREATE TABLE "relegation" (
  "team" text,
  "average" real,
  "points" real,
  "played" real,
  "1988_89" text,
  "1989_90" text,
  "1990_1991" real
);

Question: How much Average has a Team of san lorenzo, and a 1990-1991 smaller than 45?
SQL: SELECT COUNT("average") FROM "relegation" WHERE "team"='san lorenzo' AND "1990_1991"<45;

Question: Which Played is the lowest one that has a 1989-90 of 39, and a Team of gimnasia de la plata, and Points larger than 108?
SQL: SELECT MIN("played") FROM "relegation" WHERE "1989_90"='39' AND "team"='gimnasia de la plata' AND "points">108;

Question: Which 1990-1991 is the average one that has Played of 38, and Points of 40?
SQL: SELECT AVG("1990_1991") FROM "relegation" WHERE "played"=38 AND "points"=40;