user: Question: Name the most that attendend when the venue was TD Banknorth Garden and the series of Montreal leads 3-1
Columns: ['Date', 'Venue', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Series']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['April 10', 'Bell Centre', 'Boston Bruins', '1 – 4', 'Montreal', 'Price', 21273.0, 'Montreal leads 1-0']
SQL:

assistant: SELECT MAX("Attendance") FROM "Table" WHERE "Venue" = 'TD Banknorth Garden' AND "Series" = 'Montreal leads 3-1';