user: Question: What is the average attendance at a game held at Firhill for the 5(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 AVG("Attendance") FROM "Table" WHERE "Venue" = 'Firhill' AND "Round" = '5(R)';