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_21 (mission VARCHAR, date VARCHAR)
### Question:
Which Mission is on 2003 apr 1?
### Answer:
SELECT mission FROM table_name_21 WHERE date = "2003 apr 1"