user: Question: Away team Swindon Town had a Tie no listing of Replay with what as an Attendance?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Liverpool', '2–1', 'Charlton Athletic', '36,818']
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Tie no" = 'Replay' AND "Away team" = 'Swindon Town';