CREATE TABLE table_name_83 (country VARCHAR2, date VARCHAR2, birth_date VARCHAR2)

What country was the woman from who was born 1976-07-23 and became a grandmaster in 1991?
SELECT country FROM table_name_83 WHERE date = 1991 AND birth_date = "1976-07-23"
SELECT "country" FROM "table_name_83" WHERE "1976-07-23" = "birth_date" AND "date" = 1991