YOU SAID:
I am the brother of your other mother
INTO JAPANESE
私はあなたのもう一人の母親の兄弟です
BACK INTO ENGLISH
I'm your other mother's brother
INTO JAPANESE
私はあなたのもう一人の母親の兄弟です
BACK INTO ENGLISH
I'm your other mother's brother
That didn't even make that much sense in English.