YOU SAID:
Your uncle shaves his brother
INTO JAPANESE
おじさんは弟を剃っている
BACK INTO ENGLISH
My uncle's shaving my brother.
INTO JAPANESE
叔父は兄を剃っている。
BACK INTO ENGLISH
My uncle shaves his brother.
INTO JAPANESE
叔父は弟を剃っている。
BACK INTO ENGLISH
My uncle shaves his brother.
That didn't even make that much sense in English.