If X is the sister of Y, Y is the father of Z and Z is the brother of W, then how is X related to W?

P is the sister of Q. Q is the father of R. S is the mother of R and T is the father of S. How is S related to Q?

P is the mother of K; K is the sister of D; D is the father of J. How is P related to J?

P is sister of Q. Q is the wife of R. S and R are brothers. What is P to R?

Vinod introduces Vishal as the son of the only brother of his father's wife. How is Vinod related to Vishal?

If C is brother of B, B is son of A, D is father of C and A is female, then A is