논문이

In a sentence

• 이 논문이 우수한 연구로 인정받았습니다.

  This thesis was recognized as an excellent research work.

  Here, '논문이' functions as the subject of the sentence, indicating the thesis that received recognition.

• 교수님이 그 논문이 적합하다고 설명하셨습니다.

  The professor explained that the thesis is appropriate.

  In this case, '논문이' introduces the thesis being characterized as suitable.

• 도서관에서 찾은 논문이 정말 유용했어요.

  The thesis found in the library was very useful.

  Here, '논문이' serves as the subject, describing the thesis that was beneficial.