user: Question: Which opponent had 38,642 attendance?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 3, 1995', 'at Indianapolis Colts', 'W 24–21', '42,445']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Attendance" = '38,642';