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_63 (date VARCHAR, competition VARCHAR, result VARCHAR)
### Question:
On What Date is the Competition Semifinal that has a result of 2-1 aet?
### Answer:
SELECT date FROM table_name_63 WHERE competition = "semifinal" AND result = "2-1 aet"