user: Question: What was the Opponent on August 31, 1997?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'August 31, 1997', 'Arizona Cardinals', 'W 24–21', '53,644']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'August 31, 1997';