YOU SAID:

who is that person I don't know do you should be

INTO JAPANESE

その人は誰ですか私は知らない

BACK INTO ENGLISH

Who i am I do not know

INTO JAPANESE

私は誰なのかわからない

BACK INTO ENGLISH

I do not know who

INTO JAPANESE

分からない

BACK INTO ENGLISH

I don't know.

INTO JAPANESE

わかりません。

BACK INTO ENGLISH

I don't know.