user: Question: What is the highest Attendance with a Result that is W 24-21?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 27, 1953', 'Pittsburgh Steelers', 'W 38-21', 44587.0]
SQL:

assistant: SELECT MAX("Attendance") FROM "Table" WHERE "Result" = 'W 24-21';