Question: What was the date of release for the episode sorted value of 6Y/AA?
SQL: SELECT "Released" FROM "2-1620397-2" WHERE "Series Sorted" = '6Y/AA';

Question: What is the series sorted value for the episode released December 2009?
SQL: SELECT "Series Sorted" FROM "2-1620397-2" WHERE "Released" = 'December 2009';