user: Question: What was the first week to have attendance of 65866?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 12, 1999', 'Pittsburgh Steelers', 'L 43–0', 73138.0]
SQL:

assistant: SELECT MIN("Week") FROM "Table" WHERE "Attendance" = 65866.0;