のを知って

knowing that

→ の
phrase Rare #35,488
knowing that Connects something someone learns to what happens or how they feel as a result.
JA: 彼が来るのを知って、安心しました。
EN: I was relieved to learn that he was coming.

皆が私の案に賛成してくれるのを知ってうれしかった。

I was happy to learn that everyone supported my proposal.

彼は私が試験に通ったのを知って喜んだ。

He was happy to hear that I had passed the exam.

彼女は彼が急に考えを変えたのを知って驚いた。

She was surprised to learn that he had suddenly changed his mind.

リンダはナンシー叔母さんが訪ねて来るというのを知って胸がわくわくした。

Linda was thrilled to learn that her Aunt Nancy was coming to visit.

それが燃えているのを知ってびっくりした。

I was surprised to find out that it was on fire.