CREATE TABLE table_16670 ("Rd." FLOAT, "Grand Prix" CLOB, "Date" CLOB, "Location" CLOB, "Pole Position" CLOB, "Fastest Lap" CLOB, "Winning Driver" CLOB, "Constructor" CLOB, "Report" CLOB)

Which rd. occurred on 22 October?
SELECT MIN("Rd.") FROM table_16670 WHERE "Date" = '22 October'
SELECT MIN("Rd.") FROM "table_16670" WHERE "Date" = '22 October'