Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_75 (year INTEGER, chassis VARCHAR, entrant VARCHAR, points VARCHAR)
### Question:
What year did Elf Team Tyrrell have 39 points and a Tyrrell 007 Chassis?
### Answer:
SELECT SUM(year) FROM table_name_75 WHERE entrant = "elf team tyrrell" AND points = "39" AND chassis = "tyrrell 007"