There are eight persons N, O, P, Q, R, S, T, and U in a family of three generations. S is the son of Q, who is the daughter-in-law of U. U is the father of P, who is a female. O is the niece of P. O is married to R. N is the father-in-law of R. The gender of T and N is different. T has two siblings. T is not the daughter of U. Which among the following options is/are definitely true?