user: Question: How much power does the fuel injection system have with a displacement of 1991cc?
Columns: ['Model', 'Years', 'Engine', 'Displacement', 'Power', 'Fuel system']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Berlina', '1960-62', 'Lancia H4 ohv', '1500cc', 'PS (kW; hp)', 'single carburetor']
SQL:

assistant: SELECT "Power" FROM "Table" WHERE "Fuel system" = 'fuel injection' AND "Displacement" = '1991cc';