YOU SAID:
Maryam is the best person in the entire world.
INTO JAPANESE
マリアムは、全世界で最高の人です。
BACK INTO ENGLISH
Maryam is the best person all over the world.
INTO JAPANESE
マリアムは、世界最高の人です。
BACK INTO ENGLISH
Mariam is the best person in the world.
INTO JAPANESE
マリアムは、世界で最高の人です。
BACK INTO ENGLISH
Mariam is the best person in the world.
That didn't even make that much sense in English.