CREATE TABLE table_25291 ("Rnd" FLOAT, "Date" CLOB, "Race Name" CLOB, "Length" CLOB, "Track" CLOB, "Location" CLOB, "Type" CLOB, "Pole Position" CLOB, "Winning Driver" CLOB)

Which track was used on September 12, 1981?
SELECT "Track" FROM table_25291 WHERE "Date" = 'September 12, 1981'
SELECT "Track" FROM "table_25291" WHERE "Date" = 'September 12, 1981'