user: Question: What type of engine does a 1951 Alfa Romeo 159M chasis have?
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 "Engine" FROM "Table" WHERE "Year" = 1951.0 AND "Chassis" = 'Alfa Romeo 159M';