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_1315616_1 (mediator VARCHAR, kōhaku__number VARCHAR)
### Question:
Who was the mediator in kōhaku number 53?
### Answer:
SELECT mediator FROM table_1315616_1 WHERE kōhaku__number = 53