YOU SAID:

my grandfather is a great man but not man

INTO JAPANESE

私の祖父は偉大な男が、男ではないです。

BACK INTO ENGLISH

My grandfather was a great guy, but man is not.

INTO JAPANESE

私の祖父は偉大な男が、人間ではないです。

BACK INTO ENGLISH

My grandfather was a great man is not human.

INTO JAPANESE

私の祖父は偉大な男が人間ではないです。

BACK INTO ENGLISH

My grandfather was a great man is not human.