Question

There are ten members J, K, L, M, N, O, P, Q, R and S in a family. There are two generations in the family. There are three couples with at least one child each. S is the son of O. N is the brother of O. Neither R nor L has any sibling. P is the daughter of Q’s sister. R is the father of J. L is the sister-in-law of O. M is the nephew of O. K is the aunt of J, who is a male member. N does not have any sister and has only one child. L is not married to the sibling of spouse of O.