user: Question: Who was the visitor when Toronto was at home with over 17019 attending?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['January 1', 'Tampa Bay', '3 – 4', 'Toronto', 'Ramo', 19347.0, '15–21–4']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Attendance" > 17019.0 AND "Home" = 'Toronto';