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_20 (date VARCHAR, competition VARCHAR)
### Question:
The 2002 African Cup of Nations was held on what date?
### Answer:
SELECT date FROM table_name_20 WHERE competition = "2002 african cup of nations"