user: Question: Name the chassis of 147 points and engine of Ford Cosworth DFX
Columns: ['Year', 'Team', 'Chassis', 'Engine', 'Rank', 'Points']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1982.0, 'Forsythe Newman', 'March 82C', 'Ford Cosworth DFX', '22nd', 28.0]
SQL:

assistant: SELECT "Chassis" FROM "Table" WHERE "Points" = 147.0 AND "Engine" = 'Ford Cosworth DFX';