Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_1140116_6 (race_name VARCHAR, winning_driver VARCHAR)
### Question:
Which races did Paul Greifzu win?
### Answer:
SELECT race_name FROM table_1140116_6 WHERE winning_driver = "Paul Greifzu"