user: ### NOW ANSWER:
Question: What was the date of The ACE Group Classic tournament with a 1 stroke margin of victory?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Feb 14, 2010', 'The ACE Group Classic', '−17 (68-67-64=199)', '1 stroke', 'Tommy Armour III']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Margin of victory" = '1 stroke' AND "Tournament" = 'The ACE Group Classic';