instruction:
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).
question:
The dam on the Cotter River has been under construction for four years.
answer:
コッター川のダムは4年間も建設中である。


question:
But whilst equinoxes occur twice a year on Earth, Saturn takes around 29.7 Earth years to orbit the Sun so the events are much rarer.
answer:
しかし、地球では春分と秋分は1年に2回だが、土星は太陽の周りを好転するのに地球の時間で約29.7年かかるため、この出来事はさらに希少だ。


question:
Two and a half times the number of seats that had been reserved for women.
answer:

以前女性が占めていた議席の2.5倍となった。