In this task, you are given a sentence in the English language and your task is to convert it into the Japanese language. In translation, keep numbers as it is and make it sentence case (capitalize only the first word of each sentence and noun).

Q: The prediction is for this to be the fourth-worst season for dissolved oxygen in two decades.

A: 予測によれば、溶存酸素のためにこの２０年で四番目に悪い夏になる。
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Q: According to Japan's Act on nationality, a non-Japanese child (under 20) who was after its birth legitimated by marriage and acknowledgment can acquire Japanese nationality by filing notification, with some requirements which the plaintiffs had already fulfilled.

A: 日本の国籍法によると、結婚および認知によってその出生が合法化された日本人以外の子ども（二十歳以下）は、原告らが既に記入していた通知に記入することで日本国籍を得ることができる。
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Q: The Navy, however, had no knowledge of such an exercise, and no reports from other nations regarding the submarine.

A:
しかし、海軍はそのような軍事演習があるとは知らず、潜水艦に関する他の国からの報告も受けていなかった。
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