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_72 (uk_broadcast_date VARCHAR, presenter VARCHAR)
### Question:
What is the UK broadcast date of the episode where Chris Bonington was the presenter?
### Answer:
SELECT uk_broadcast_date FROM table_name_72 WHERE presenter = "chris bonington"