because ... was, because … was
その双子はとてもよく似ていたので、二人を区別するのは難しかった。
The twins looked so much alike that it was difficult to tell them apart.
今週はたくさんの人が休んでいたので、その企画を完成できなかった。
We couldn't complete the project because so many people were absent this week.
Everyone can feel it. You felt it too, didn’t you?
— エブリシング・エブリウェア・オール・アット・ワンス (2022)
His explanation was so clear and to the point that everyone in the class understood it.