CREATE TABLE table_name_75 (year INTEGER, chassis VARCHAR(255), entrant VARCHAR(255), points VARCHAR(255))
What year did Elf Team Tyrrell have 39 points and a Tyrrell 007 Chassis?
    
SQL: SELECT SUM(year) FROM table_name_75 WHERE entrant = "elf team tyrrell" AND points = "39" AND chassis = "tyrrell 007"