What is the total number of sunk by U-boats with less than 2 German submarines lost, 56328 sunk by aircrafts, and more than 8269 sunk by mines?
CREATE TABLE "references" (
  "month_year" text,
  "sunk_by_u_boat" real,
  "sunk_by_aircraft" real,
  "sunk_by_warship_or_raider" real,
  "sunk_by_mines" real,
  "german_submarines_lost" real
);
SELECT COUNT("sunk_by_u_boat") FROM "references" WHERE "german_submarines_lost"<2 AND "sunk_by_aircraft"=56328 AND "sunk_by_mines">8269;