user: ### NOW ANSWER:
Question: what is the week there were 41604 people in attendance?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'August 12, 1955', 'vs. College All-Stars at Chicago', 'L 30–27', 75000.0]
SQL:

assistant: SELECT AVG("Week") FROM "Table" WHERE "Attendance" = 41604.0;