user: Question: What day did Bernhard Langer (2) win?
Columns: ['Date', 'Tournament', 'Location', 'Purse( $ )', 'Winner', 'Score', '1st Prize( $ )']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Jan 20', 'MasterCard Championship at Hualalai', 'Hawaii', 1800000.0, 'Fred Funk (3)', '195 (-21)', '300,000']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Winner" = 'Bernhard Langer (2)';