What is the Valvetrain of the Diesel Engines Model?
CREATE TABLE table_name_12 (valvetrain VARCHAR, model VARCHAR)
SELECT valvetrain FROM table_name_12 WHERE model = "diesel engines"
### Context: CREATE TABLE table_name_12 (valvetrain VARCHAR, model VARCHAR) ### Question: What is the Valvetrain of the Diesel Engines Model? ### Answer: SELECT valvetrain FROM table_name_12 WHERE model = "diesel engines"