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Q  is son  of  R.                  Q is a man.  R is a father or mother.

R is not mother of Q.        R is the father of Q.  R is a man.

P and R are married couple.    So  P is a woman, mother of Q  and wife of R.

Y is brother of R.      Y is man.
X  is daughter of  P.        X is woman and sister of Q.

Z is the brother of  P.      Z is man and maternal uncle of  Q and X.

Father of Q  = R.

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