user: Question: Which Engine has a Model of sl500, and a Year From larger than 1999?
Columns: ['Model', 'Chassis', 'Engine', 'Year From', 'Year To']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['SL280', 129.058, 104.943, 1993.0, 1997.0]
SQL:

assistant: SELECT "Engine" FROM "Table" WHERE "Model" = 'sl500' AND "Year From" > 1999.0;