Which 2011-12 season with a volume larger than 27,543 at club of melfi?
CREATE TABLE "girone_b" (
  "club" text,
  "city" text,
  "stadium" text,
  "capacity" real,
  "2011_12_season" text
);
SELECT "2011_12_season" FROM "girone_b" WHERE "capacity">'27,543' AND "club"='melfi';