user: Question: Record of 18–15–6 belongs to what lowest attendance?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['January 4', 'Boston', '3 – 2', 'Philadelphia', 'Parent', 10097.0, '17–13–5']
SQL:

assistant: SELECT MIN("Attendance") FROM "Table" WHERE "Record" = '18–15–6';