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_name_34 (date VARCHAR, winning_constructor VARCHAR, winning_driver VARCHAR)
### Question:
Which Date has a Winning constructor of fiat and a Winning driver of louis wagner?
### Answer:
SELECT date FROM table_name_34 WHERE winning_constructor = "fiat" AND winning_driver = "louis wagner"