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_40 (date VARCHAR, description VARCHAR)
### Question:
What is the date of the British Rail class 111 tslrb description?
### Answer:
SELECT date FROM table_name_40 WHERE description = "british rail class 111 tslrb"