user: Question: What is Country, when Player is "Jack Nicklaus"?
Columns: ['Place', 'Player', 'Country', 'Score', 'To par']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Deane Beman', 'United States', '68-69=137', '–3']
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Player" = 'Jack Nicklaus';