YOU SAID:
not sure that you're from the future or
INTO JAPANESE
あなたが未来から来たのかわからない
BACK INTO ENGLISH
I don't know if you came from the future
INTO JAPANESE
あなたが未来から来たかどうかはわかりません
BACK INTO ENGLISH
I don't know if you came from the future
That didn't even make that much sense in English.