YOU SAID:

Magic: It was something that Harry Potter thought was very good

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マジック：ハリー・ポッターがとても良いと思っていたものだった

BACK INTO ENGLISH

Magic: It was what Harry Potter thought was very good

INTO JAPANESE

マジック：それはハリー・ポッターが非常に良いと思ったものでした

BACK INTO ENGLISH

Magic: That was what Harry Potter thought was very good

INTO JAPANESE

マジック：それはハリー・ポッターが非常に良いと思ったものでした

BACK INTO ENGLISH

Magic: That was what Harry Potter thought was very good