This is the 1360th most frequent Korean word.
사람에게
"To a person" or "to people."
In this sentence, '사람에게' functions as the indirect object phrase indicating the receiver of the action (giving the book).
그 사람에게 책을 줬습니다.
I gave the book to that person.
Here, '사람에게' specifies the person to whom the action of asking is directed.
그 사람에게 물어보세요.
Ask that person.
In this case, '사람에게서' (from that person) indicates the source of something, showcasing a variation of the base '사람에게'.