Which Pos has a Dutch Cup of winner, and a Tier larger than 1?
CREATE TABLE "results" (
  "season" text,
  "tier" real,
  "league" text,
  "pos" real,
  "postseason" text,
  "dutch_cup" text,
  "european_competitions" text
);
SELECT AVG("pos") FROM "results" WHERE "dutch_cup"='winner' AND "tier">1;