대명사 및 한정사 - 관계 대명사

used to refer to people or animals with names

누구

used to refers to animals and things

어떤, 그것

used to introduce relative clauses that refer to people, animals, or things

그것, 누구

used to refer to people in formal English, particularly when they are the object of a verb or preposition

누구를, 누구에게

used to show that the thing mentioned belongs to a particular person or thing

누구의, 어느