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_23982399_1 (overall_episode__number INTEGER, original_airdate VARCHAR)
### Question:
What episode number originally aired on November 21, 1993?
### Answer:
SELECT MAX(overall_episode__number) FROM table_23982399_1 WHERE original_airdate = "November 21, 1993"