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_19396259_1 (directed_by VARCHAR, production_code VARCHAR)
### Question:
Name the directed by for production code for 3t7509
### Answer:
SELECT directed_by FROM table_19396259_1 WHERE production_code = "3T7509"