user: ### NOW ANSWER:
Question: What is the chassis for a 1952 Officine Alfieri Maserati with an entrant?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1950.0, 'Scuderia Milano', 'Maserati 4CLT/50', 'Maserati Straight-4', 2.0]
SQL:

assistant: SELECT "Chassis" FROM "Table" WHERE "Entrant" = 'Officine Alfieri Maserati' AND "Year" = 1952.0;