user: Question: What week corresponds to the last one to be played at the Memorial Stadium?
Columns: ['Week', 'Opponent', 'Result', 'Stadium', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Cleveland Browns', 'W 34–17', 'Schaefer Stadium', '1–0', 49222.0]
SQL:

assistant: SELECT MAX("Week") FROM "Table" WHERE "Stadium" = 'Memorial Stadium';