Table: jack_brabham_race_data
Columns: year
entrant
chassis
engine
points

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 jack_brabham_race_data WHERE "entrant" = 'brabham racing organisation' AND "year" = 1964 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 jack_brabham_race_data WHERE "points" = '42 (45)' AND "chassis" = 'brabham bt20'

Question: how many times is the chassis brabham bt33?
SQL: SELECT COUNT("year") FROM jack_brabham_race_data WHERE "chassis" = 'brabham bt33'