YOU SAID:
What are you doing in Hogwarts corridors, Mr Potter ?
INTO JAPANESE
何をして、ホグワーツ魔法魔術学校の廊下でポッターさんですか。
BACK INTO ENGLISH
What then is the Potter in the corridors of Hogwarts School of witchcraft.
INTO JAPANESE
何が魔法のホグワーツ魔法魔術学校の廊下の陶工です。
BACK INTO ENGLISH
What is a Potter in the corridors of Hogwarts School of magic.
Come on, you can do better than that.