PQRSTU where male and female are equal. There is a married couple. Q is the daughter of P. S is the father of two children – one male and female. P and T are the daughters of U. What is a married couple?

A.T.Q. Q is the daughter of P, and P is the daughter of U then we can assume P has a husband. (because there is no information on U's gender and spouse) Furthermore, it is given that S is the father of 2 children, it is clear that he is the husband of P and not U because he has one male and one female child

s and p, imp. clue =s is the father of two child.... and we know p is also mother of q so q should be the daughter of s and p