What country has a fire store of 1991 and a hard discounter of 397?
CREATE TABLE "europe" (
  "country" text,
  "first_store" text,
  "hypermarkets" text,
  "supermarkets" text,
  "hard_discounters" text
);
SELECT "country" FROM "europe" WHERE "first_store"='1991' AND "hard_discounters"='397';