user: Question: When it is October 25, 1981 who is the opponent?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Record', 'Game Site', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 6, 1981', 'at New England Patriots', 'W 29–28', '1–0', 'Schaeffer Stadium', 49572.0]
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'October 25, 1981';