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_67 (year INTEGER, notes VARCHAR, director VARCHAR)
### Question:
Notes of bbc radio 4, and a Director of peter kavanagh includes which average year?
### Answer:
SELECT AVG(year) FROM table_name_67 WHERE notes = "bbc radio 4" AND director = "peter kavanagh"