user: ### NOW ANSWER:
Question: How many years did Barclay Nordica Arrows BMW enter with Cosworth V8 engine?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1979.0, 'Team Ensign', 'Ensign N179', 'Cosworth V8', 0.0]
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Entrant" = 'Barclay Nordica Arrows BMW' AND "Engine" = 'Cosworth V8';