YOU SAID:

Someone unknown was here and partied

INTO JAPANESE

未知の誰かがここで、パーティー

BACK INTO ENGLISH

Party here, could someone of unknown

INTO JAPANESE

パーティーはこちら、未知の誰か

BACK INTO ENGLISH

The party is here, unknown someone

INTO JAPANESE

パーティーはここでは、知られている誰か

BACK INTO ENGLISH

The party is here, someone known

INTO JAPANESE

パーティーはここでは、知られている誰か

BACK INTO ENGLISH

The party is here, someone known