Table: piero_taruffi_results
Columns: year
entrant
chassis
engine
points

Question: Which Chassis has more than 0 points, an Entrant of Scuderia Ferrari, and was later than 1952?
SQL: SELECT "chassis" FROM piero_taruffi_results WHERE "points" > 0 AND "entrant" = 'scuderia ferrari' AND "year" > 1952

Question: Which Entrant has a vanwall straight-4 engine?
SQL: SELECT "entrant" FROM piero_taruffi_results WHERE "engine" = 'vanwall straight-4'