Question: what is the points when the entrant is Brabham Racing Organisation, the year is 1964 and the chassis is Brabham BT7?
SQL: SELECT "Points" FROM "2-16564-1" WHERE "Entrant" = 'Brabham Racing Organisation' AND "Year" = 1964.0 AND "Chassis" = 'Brabham BT7';

Question: who is the entrant when the points is 42 (45) and the chassis is Brabham BT20?
SQL: SELECT "Entrant" FROM "2-16564-1" WHERE "Points" = '42 (45)' AND "Chassis" = 'Brabham BT20';

Question: how many times is the chassis brabham bt33?
SQL: SELECT COUNT("Year") FROM "2-16564-1" WHERE "Chassis" = 'brabham bt33';