CREATE TABLE table_name_75 (year INT, chassis VARCHAR, entrant VARCHAR, points VARCHAR)

What year did Elf Team Tyrrell have 39 points and a Tyrrell 007 Chassis?
SELECT SUM(year) FROM table_name_75 WHERE entrant = "elf team tyrrell" AND points = "39" AND chassis = "tyrrell 007"
SELECT SUM("year") FROM "table_name_75" WHERE "39" = "points" AND "chassis" = "tyrrell 007" AND "elf team tyrrell" = "entrant"