user: Question: Which Week has an Opponent of pittsburgh steelers, and an Attendance larger than 47727?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 14, 1968', 'at Minnesota Vikings', 'L 47-7', 45563.0]
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Opponent" = 'pittsburgh steelers' AND "Attendance" > 47727.0;