P is the uncle of Q. Q is the daughter of R. How is R related to P?

B. SISTER

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER

P is the uncle of Q. R is the sister of Q. How is P related to R?

C. UNCLE

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER