user: Question: Tell me the week for Pittsburgh Steelers opponent
Columns: ['Week', 'Date', 'Opponent', 'Time', 'Game Site', 'Result/Score', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['HF', 'August 5, 2007', 'Pittsburgh Steelers', '8:00 pm EDT', 'Fawcett Stadium', 'L 20-7', '0-1']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Opponent" = 'Pittsburgh Steelers';