Who directed the episodes that aired December 15, 1956? 
CREATE TABLE table_25800134_1 (director VARCHAR, airdate VARCHAR)
SELECT director FROM table_25800134_1 WHERE airdate = "December 15, 1956"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25800134_1 (director VARCHAR, airdate VARCHAR) Question: Who directed the episodes that aired December 15, 1956?  [/INST] SELECT director FROM table_25800134_1 WHERE airdate = "December 15, 1956" </s>