YOU SAID:
the person who is sitting next to me is a big idiot
INTO JAPANESE
私の隣に座っている人は大きなバカです
BACK INTO ENGLISH
The person sitting next to me is a big idiot.
INTO JAPANESE
私の隣に座っている人はばかです。
BACK INTO ENGLISH
The person sitting next to me is an aunt.
INTO JAPANESE
私の隣に座っている人は叔母です。
BACK INTO ENGLISH
The person sitting next to me is my aunt.
INTO JAPANESE
私の隣に座っている人は私の叔母です。
BACK INTO ENGLISH
The person sitting next to me is my aunt.
That didn't even make that much sense in English.