What's the highest Loses, with Wins that's larger than 3 and a Pos. Larger than 3?
CREATE TABLE "group_b" (
  "pos" real,
  "matches" real,
  "wins" real,
  "loses" real,
  "results" text,
  "points" real,
  "diff" text
);
SELECT MAX("loses") FROM "group_b" WHERE "wins">3 AND "pos">3;