user: Question: How many weeks was there an attendance of 74,347?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 9, 1990', 'at Los Angeles Raiders', 'L 14–9', '54,206']
SQL:

assistant: SELECT COUNT("Week") FROM "Table" WHERE "Attendance" = '74,347';