YOU SAID:
I’m the prettiest person at the friendship festival
INTO JAPANESE
私は友情祭で一番かわいい人です
BACK INTO ENGLISH
I am the cutest person in the friendship festival.
INTO JAPANESE
私は友情祭の中で一番かわいい人です。
BACK INTO ENGLISH
I am the cutest person in the friendship festival.
You've done this before, haven't you.