Question: What country has 50 supermarkets?
SQL: SELECT "Country" FROM "2-167638-3" WHERE "Supermarkets" = '50';

Question: What country has 370 supermarkets?
SQL: SELECT "Country" FROM "2-167638-3" WHERE "Supermarkets" = '370';

Question: What country has a fire store of 1991 and a hard discounter of 397?
SQL: SELECT "Country" FROM "2-167638-3" WHERE "First store" = '1991' AND "Hard Discounters" = '397';