YOU SAID:
The day the duck left was the saddest.
INTO JAPANESE
アヒルが残した日は最も悲しかった。
BACK INTO ENGLISH
The day the duck left was the saddest.
INTO JAPANESE
アヒルが残した日は最も悲しかった。
BACK INTO ENGLISH
The day the duck left was the saddest.
That didn't even make that much sense in English.