user: Question: Which Week has an Opponent of at Seattle Seahawks?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 3, 1995', 'at Oakland Raiders', 'L 17–7', '50,323']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Opponent" = 'at Seattle Seahawks';