CREATE TABLE table_64231 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" FLOAT)

Who was the opponent on November 15, 1981?
SELECT "Opponent" FROM table_64231 WHERE "Date" = 'november 15, 1981'
SELECT "Opponent" FROM "table_64231" WHERE "Date" = 'november 15, 1981'