user: Question: WhAt round hAs 2-1 As the result, And A As the venue?
Columns: ['Round', 'Date', 'Opponent', 'Venue', 'Result', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['R2 1st Leg', '19 September 2000', 'Oldham Athletic', 'A', '3-1', 3213.0]
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Result" = '2-1' AND "Venue" = 'A';