What is the year of the Lotus 25 chassis?
CREATE TABLE table_name_19 (year INTEGER, chassis VARCHAR)
SELECT AVG(year) FROM table_name_19 WHERE chassis = "lotus 25"
### Context: CREATE TABLE table_name_19 (year INTEGER, chassis VARCHAR) ### Question: What is the year of the Lotus 25 chassis? ### Answer: SELECT AVG(year) FROM table_name_19 WHERE chassis = "lotus 25"