CREATE TABLE table_47443 ("Series Sorted" TEXT, "Title" TEXT, "Doctor" TEXT, "Featuring" TEXT, "Released" TEXT)

what is the released when the series is sorted 6y/ai?
SELECT "Released" FROM table_47443 WHERE "Series Sorted" = '6y/ai'
SELECT "Released" FROM "table_47443" WHERE "Series Sorted" = '6y/ai'