YOU SAID:
Mu name is Jon, what is yours?
INTO JAPANESE
Mu の名前はジョン、あなたは何か。
BACK INTO ENGLISH
John, you are the name of Mu?
INTO JAPANESE
ジョン、あなたは Mu の名前ですか。
BACK INTO ENGLISH
John, you are the name of Mu?
That didn't even make that much sense in English.