user: Question: Which To par has a Winning score of 64-68-66-63=261?
Columns: ['Date', 'Tournament', 'Winning score', 'To par', 'Margin of victory']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Sep 16, 1984', 'Greater Milwaukee Open', '67-68-69-68=272', '–16', '5 strokes']
SQL:

assistant: SELECT "To par" FROM "Table" WHERE "Winning score" = '64-68-66-63=261';