user: Question: What country was the woman from who was born 1976-07-23 and became a grandmaster in 1991?
Columns: ['Name', 'Country', 'Birth Date', 'Date', 'Earned', 'Peak rating (Nov 2012)']
Types: ['text', 'text', 'text', 'real', 'text', 'real']
Sample row: ['Nona Gaprindashvili', 'Georgia', '1941-05-03', 1978.0, 'WCC', 2495.0]
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Date" = 1991.0 AND "Birth Date" = '1976-07-23';