This is the 16619th most frequent Korean word.
사실입니다
"It is a fact."
Here, '사실입니다' is used to assert the truthfulness of a statement.
이 사건은 아주 복잡할 것 같지만, 사실입니다.
This case seems very complex, but it is true.
In this sentence, '사실입니다' confirms the validity of an opinion about someone.
저는 그가 똑똑하다는 것이 사실입니다.
It is true that he is intelligent.
Here, '사실입니다' is utilized to differentiate between a belief and a reality.