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).

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.
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。

The court ruled that businesses created with the purpose of letting users commit copyright violations should be held liable for the infringement.
法廷はユーザーが著作権違反を犯すことを許すと意図して作られた企業が侵害に対して責任を負うべきであると判決を下した。

ICANN has also entered into negotiations with registries for .cat, .post and .mobi domains.

ICANNはまた、.cat、.postと.mobiドメインの登録に向けて交渉を開始した。