user: Question: Which Week has a Opponent of Tennessee Titans?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 9, 2001', 'Pittsburgh Steelers', 'W 21–3', '63,785']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Opponent" = 'Tennessee Titans';