Table: willy_mairesse_results
Columns: year
entrant
chassis
engine
points

Question: In the Formula One World Championships, which entrant had 0 points with a Ferrari 156 Chassis after 1961?
SQL: SELECT "entrant" FROM willy_mairesse_results WHERE "points" = 0 AND "year" > 1961 AND "chassis" = 'ferrari 156'

Question: During the Formula One World Championships, which engine was used in 1965?
SQL: SELECT "engine" FROM willy_mairesse_results WHERE "year" = 1965

Question: How many points were earned with a Chassis of a Ferrari 156?
SQL: SELECT COUNT("points") FROM willy_mairesse_results WHERE "chassis" = 'ferrari 156'