YOU SAID:
he is father not daddy get it straight wait you can't
INTO JAPANESE
彼は父親ではありません。
BACK INTO ENGLISH
He is not a father.
INTO JAPANESE
彼は父親ではない。
BACK INTO ENGLISH
He is not his father.
INTO JAPANESE
彼は父親ではありません。
BACK INTO ENGLISH
He is not a father.
INTO JAPANESE
彼は父親ではない。
BACK INTO ENGLISH
He is not his father.
it is unlikely that this phrase will ever reach equilibrium