WHich Regular Season Champions has a Year of 1943–44?
CREATE TABLE "champions_by_year" (
  "year" text,
  "regular_season_champion_s" text,
  "record" text,
  "tournament_champion" text,
  "tournament_venue" text,
  "tournament_city" text
);
SELECT "regular_season_champion_s" FROM "champions_by_year" WHERE "year"='1943–44';