user: Question: On what Date was the Winning score –8 (69-72-70-69=280)?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Jul 3, 1966', "U.S. Women's Open", '+9 (75-74-76-72=297)', '1 stroke', 'Carol Mann']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Winning score" = '–8 (69-72-70-69=280)';