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_2618152_1 (production_code VARCHAR, original_air_date VARCHAR)
### Question:
The episode with the original air date January 6, 1999, has what production code?
### Answer:
SELECT production_code FROM table_2618152_1 WHERE original_air_date = "January 6, 1999"