user: Question: what's the earliest year that there was a Cosworth V8 engine and 12 points?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1986.0, 'Minardi Team', 'Minardi M185B', 'MM V6', 0.0]
SQL:

assistant: SELECT MIN("Year") FROM "Table" WHERE "Engine" = 'Cosworth V8' AND "Points" = 12.0;