CREATE TABLE table_28559 ("Film Festival" TEXT, "Date of ceremony" TEXT, "Category" TEXT, "Participants/Recipients" TEXT, "Result" TEXT)

What date was the participant/recipient takakazu watanabe?
SELECT "Date of ceremony" FROM table_28559 WHERE "Participants/Recipients" = 'Takakazu Watanabe'
SELECT "Date of ceremony" FROM "table_28559" WHERE "Participants/Recipients" = 'Takakazu Watanabe'