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_15739098_1 (airdate VARCHAR, director VARCHAR)
### Question:
What is the airdate when the director is george spenton-foster
### Answer:
SELECT airdate FROM table_15739098_1 WHERE director = "George Spenton-Foster"