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_20466963_4 (date VARCHAR, presenter VARCHAR)
### Question:
What is the date of the episode in which the presenter is Johnny Vaughan?
### Answer:
SELECT date FROM table_20466963_4 WHERE presenter = "Johnny Vaughan"