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_25800134_1 (director VARCHAR, airdate VARCHAR)
### Question:
Who directed the episodes that aired December 15, 1956? 
### Answer:
SELECT director FROM table_25800134_1 WHERE airdate = "December 15, 1956"