YOU SAID:
It was you who killed my brother!
INTO JAPANESE
私の兄弟を殺したのはあなたでした!
BACK INTO ENGLISH
It was you who killed my brother!
INTO JAPANESE
私の兄弟を殺したのはあなたでした!
BACK INTO ENGLISH
It was you who killed my brother!
That didn't even make that much sense in English.