This is the 7558th most frequent Korean word.
탄원서에
A petition or written appeal.
Here, '탄원서에' refers to the petition document itself, used to express an act of submission.
민원인은 탄원서를 제출했습니다.
The petitioner submitted a petition.
In this sentence, '탄원서에' indicates the context or location where signatures are being requested, emphasizing the petition document.
탄원서에 서명을 요청하였습니다.
We requested signatures on the petition.
Here, '탄원서에' is used to locate the information within the petition, referring to its written content.