CREATE TABLE table_21597 ("Year  ( Ceremony ) " CLOB, "Film title used in nomination" CLOB, "Original title" CLOB, "Director" CLOB, "Result" CLOB)

What was the year when My Mother's Teahouse was not nominated?
SELECT "Year (Ceremony)" FROM table_21597 WHERE "Result" = 'Not Nominated' AND "Film title used in nomination" = 'My Mother''s Teahouse'
SELECT "Year (Ceremony)" FROM "table_21597" WHERE "Film title used in nomination" = 'My Mother''s Teahouse' AND "Result" = 'Not Nominated'