Directions: Study the given information carefully and answer the following questions:

In a family of 9 members i.e. Q, R, S, T, U, V, W, Y and Z there are three generations and two married couples. R is sister of W who is unmarried man. Q has no sister. Z is the daughter-in-law of Q, who is the sister-in-law of R. S is the nephew of R. Y has only one child. T is the maternal aunt of V who is grandson of Y. U is father of T.