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_75 (episode VARCHAR, airdate__usa_ VARCHAR)
### Question:
Which episode aired in the USA on 20 May 2005?
### Answer:
SELECT episode FROM table_name_75 WHERE airdate__usa_ = "20 may 2005"