불가능했지만

In a sentence

• 그는 최선을 다했지만 결국 그것은 불가능했지만.

  He tried his best, but in the end, it was impossible.

  Here, '불가능했지만' indicates the acknowledgment of an impossible situation after effort.

• 우리는 문제를 해결하려고 노력했지만, 불가능했지만 도전은 의미가 있었습니다.

  We tried to solve the problem, but even though it was impossible, the challenge was meaningful.

  In this sentence, '불가능했지만' serves to contrast the impossibility with the meaningfulness of the effort.

• 그녀는 마라톤을 끝내려고 했으나, 그것은 불가능했지만 그녀의 시도는 용감했습니다.

  She tried to finish the marathon, but even though it was impossible, her attempt was brave.

  Here, '불가능했지만' is used to transition between the impossibility and the commendable nature of her attempt.