user: ### NOW ANSWER:
Question: What year did Elf Team Tyrrell have 39 points and a Tyrrell 007 Chassis?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1972.0, 'Elf Team Tyrrell', 'Tyrrell 004', 'Ford V8', '0']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Entrant" = 'Elf Team Tyrrell' AND "Points" = '39' AND "Chassis" = 'Tyrrell 007';