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

A. BROTHER

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

A. UNCLE

D is the daughter of E. F is the son of E. How is F related to D?

A. BROTHER

K is the mother of L. M is the brother of K. N is the son of M. How is N related to L?

A. COUSIN

D is the mother of E and F. G is the father of E. How is F related to G?

A. SON