user: Question: Which week had an attendance of 70,225
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 9, 1990', 'Pittsburgh Steelers', 'W 13–3', '78,298']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Attendance" = '70,225';