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_name_38 (directed_by VARCHAR, production_code VARCHAR)
### Question:
who was the director of the episode with production code ad1a26?
### Answer:
SELECT directed_by FROM table_name_38 WHERE production_code = "ad1a26"