user: Question: Tell me the highest week for metropolitan stadium for attendance more than 47644
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 14, 1968', 'Atlanta Falcons', 'W 47-7', 'Metropolitan Stadium', 45563.0]
SQL:

assistant: SELECT MAX("Week") FROM "Table" WHERE "Venue" = 'metropolitan stadium' AND "Attendance" > 47644.0;