What is the constructor of the driver Heinz-Harald Frentzen?
CREATE TABLE table_name_50 (constructor VARCHAR, driver VARCHAR)
SELECT constructor FROM table_name_50 WHERE driver = "heinz-harald frentzen"
### Context: CREATE TABLE table_name_50 (constructor VARCHAR, driver VARCHAR) ### Question: What is the constructor of the driver Heinz-Harald Frentzen? ### Answer: SELECT constructor FROM table_name_50 WHERE driver = "heinz-harald frentzen"