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_20942925_1 (directed_by VARCHAR, production_code VARCHAR)
### Question:
What is every director with production code of NABF13?
### Answer:
SELECT directed_by FROM table_20942925_1 WHERE production_code = "NABF13"