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

「どれがこの選挙区にとって、最も有益でない、あるいは有害ですらあったのか？」
"Which was least beneficial, or even harmful, to this riding?"

彼の代理人により彼が73歳で亡くなったことが発表された。
His death at age 73 was announced by his agent.

原告は日本の東京都、埼玉県、千葉県の出身である。

The plaintiffs hail from the Japanese prefectures of Tokyo, Saitama and Chiba.