What year shows the Entrant of bmw motorsport?
CREATE TABLE table_name_15 (year INTEGER, entrant VARCHAR)
SELECT SUM(year) FROM table_name_15 WHERE entrant = "bmw motorsport"
### Context: CREATE TABLE table_name_15 (year INTEGER, entrant VARCHAR) ### Question: What year shows the Entrant of bmw motorsport? ### Answer: SELECT SUM(year) FROM table_name_15 WHERE entrant = "bmw motorsport"