user: Question: What is the average attendance for seasons before 1999 with pos of 8?
Columns: ['Season', 'Div.', 'Tms.', 'Pos.', 'Attendance/G', "Emperor's Cup"]
Types: ['real', 'text', 'real', 'real', 'real', 'text']
Sample row: [1999.0, 'J2', 10.0, 8.0, 3385.0, '3rd Round']
SQL:

assistant: SELECT AVG("Attendance/G") FROM "Table" WHERE "Pos." = 8.0 AND "Season" < 1999.0;