YOU SAID:
um hello whoever you are?
INTO JAPANESE
あなたが誰であれこんにちは?
BACK INTO ENGLISH
Hello whoever you are?
INTO JAPANESE
こんにちは、あなたが誰ですか?
BACK INTO ENGLISH
Hello, who are you?
INTO JAPANESE
こんにちは、あなたは誰ですか?
BACK INTO ENGLISH
Hello, who are you?
That didn't even make that much sense in English.