
Why is this marked 'not OK'?
かれ and 彼 are equivalent.
である is another form of です.

@small_snow @bunbuku これ、大丈夫でしょ?

変更を提案します。
かれは→彼は

+1

We have several "child prodigy" sentences that don't have Japanese translations.
https://tatoeba.org/en/sentence...e&trans_to=jpn