The man whose house we stayed in is my uncle.
The guy who sold me my car is a crook.
Which pen did he give you? The blue one.
..., whose ball I found. (Clearly, there is a mistake at the beginning of the sentence but the context helps to identify the correct relative pronoun.)
His last book, which I didn't read, was very successful.
I don't know which way to go.
Which of the Beatle's album is your favourite?

Who, which and whose are relative pronouns. 

Who only refers to people. It is used in 2 because it refers to "The guy"
Whose refers to people or things. It is used in 1 because it refers to "the man". The "house" belongs to "the man". In sentence 4, "whose" indicates that the "ball" belongs to somebody.
Which refers to objects and animals. It refers to the "pen" in sentence 3, to "his last book" in sentence 5 and to "the Beatle's album" in 7.

8 0

3 years ago