user: Question: What is the week for Result of W 28-17?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 29, 1947', 'at Pittsburgh Steelers', 'W 48-7', 35658.0]
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Result" = 'W 28-17';