user: Question: WhAt wAs the dAte of the mAtch At venue A with the Celtic As the opponent?
Columns: ['Date', 'Opponent', 'Venue', 'Result', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['20 August 1898', 'Partick Thistle', 'H', '6–2', '7,000']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Venue" = 'A' AND "Opponent" = 'Celtic';