user: Question: What date was the Doncaster race? 
Columns: ['Result', 'Date', 'Race', 'Venue', 'Group', 'Distance', 'Weight (kg)', 'Jockey', 'Winner/2nd']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['2nd', '18 August 2001', 'Manikato Stakes', 'Moonee Valley', 'G1', '1200 m', '55', 'G. Childs', '1st - Piavonic']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Race" = 'Doncaster';