user: Question: Who was the opponent at the QF(R) round?
Columns: ['Round', 'Date', 'Opponent', 'Venue', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['3', '24 November 2007', 'Ayr United', 'Firhill', 2260.0]
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Round" = 'QF(R)';