L's son A is married to B whose sister R is married to D the brother of A. How R is related to L?

A's son B is married with C, whose sister D is married to E, the brother of B. How D is related to A?(1) Sister (2) Daughter-in-law (3) Sister-in-law

X is the sister of Y .Y is the daughter of K .K is the husband of L .Then How L is related to Y?

In a family, there are ten members P, Q, R, S, T, U, V, L, W and X. P and Q are a married couple. S is the only son of R, who is the brother of P. T and W are sibling of S. Q is the daughter in law of U. X is the mother of V, Who is sister of P. L is sister in law of V, who is unmarried. How is L related to W?

D is the father of A. D is married to P. P is the mother of J. P has only one daughter. J is married to U. U is the son of L.How is J related to D ?

N is father of D. D is sister of K. K is son of T. J is son of K. M is the brother of J. C is the wife of K. B is daughter of D. How N is related to B.