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_15 (notes VARCHAR, channel VARCHAR, time VARCHAR)
### Question:
What is the notes of the transmission on channel bbc four and a time of 22:30?
### Answer:
SELECT notes FROM table_name_15 WHERE channel = "bbc four" AND time = "22:30"