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_15187794_1 (race_winner VARCHAR, circuit VARCHAR)
### Question:
Who won the race at Magny-Cours
### Answer:
SELECT race_winner FROM table_15187794_1 WHERE circuit = "Magny-Cours"