user: Question: What is the total number of years that scuderia guastalla was an entrant?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1953.0, 'Scuderia Ferrari', 'Ferrari 553', 'Ferrari Straight-4', '0']
SQL:

assistant: SELECT COUNT("Year") FROM "Table" WHERE "Entrant" = 'scuderia guastalla';