YOU SAID:
Americans are great people
INTO JAPANESE
アメリカ人は素晴らしい人です
BACK INTO ENGLISH
American is a great person
INTO JAPANESE
アメリカは偉大な人物であります
BACK INTO ENGLISH
America will be a great man
INTO JAPANESE
アメリカは偉大な男になります
BACK INTO ENGLISH
America will be a great man
Come on, you can do better than that.