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