YOU SAID:
Where in the world is the earth?
INTO JAPANESE
どこの世界で地球ですか。
BACK INTO ENGLISH
In a world where the Earth is?
INTO JAPANESE
それは世界か。
BACK INTO ENGLISH
It is the world?
INTO JAPANESE
それは、世界ですか。
BACK INTO ENGLISH
It is the world?
You should move to Japan!