user: Question: What was the attendance during the match that took place after week 11 against the Washington Redskins?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 15, 1963', 'at Baltimore Colts', 'W 37-28', 60029.0]
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Week" > 11.0 AND "Opponent" = 'Washington Redskins';