YOU SAID:

there are three people in this room

INTO JAPANESE

この部屋に 3 人は

BACK INTO ENGLISH

Three people in this room

INTO JAPANESE

この部屋で 3 人

BACK INTO ENGLISH

This room with 3 people

INTO JAPANESE

この部屋での

BACK INTO ENGLISH

This room

INTO JAPANESE

この部屋での

BACK INTO ENGLISH

This room