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).

The Stephenville incident on January 8, saw dozens of witnesses reporting a large object in the evening sky that hovered above the community before it took off at high speed.
1月8日のスティーブンビル事件では、何十もの目撃者が夜空の中の巨大な物体が、高速で離陸する前に集落の上で浮かんでいたのを見た。

The tests for seven and eleven year olds are not being abolished.
7歳児用と11歳児用の統一試験は廃止されない。

He calmly clarified that he had housed the seven attackers before the attack and had provided them with several weapons.

彼は冷静に、彼が攻撃の前に七名の攻撃者に宿を供給し、いくつかの武器を提供したと、明確にした。