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. D is the mother of B. How is D related to C?

B. MOTHER

H is the daughter of I. J is the brother of I. How is H related to J?

A. NIECE

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

C. SISTER-IN-LAW

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

A. AUNT