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).

「この３０年間、民主主義の広がりが唯一の答えであると奨励してきた」
"I have promoted the spread of democracy as the only answer for thirty years."

アーセナルのマネージャーのアーセン・ベルゲンは、この移籍がウォルコット自身と同じくらい幸せである。
Arsenal manager, Arsene Wenger is as happy about the move as Walcott himself is.

犬はいまだ行方不明だが、近隣住民により近辺で目撃されている。

It remains missing; however, neighbors say they saw it in the area.