user: Question: What is the to par of Al Mengert of the United States?
Columns: ['Place', 'Player', 'Country', 'Score', 'To par']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['T1', 'Billy Casper', 'United States', '69-68=137', '–3']
SQL:

assistant: SELECT "To par" FROM "Table" WHERE "Country" = 'United States' AND "Player" = 'Al Mengert';