Introducing a person, Shyamal said, "The only son of that person is my father." What is the relationship between Shyamal and that person?

F is the brother of G. G is the husband of H. H is the daughter of I. I is the wife of J. How is F related to J?

Z is the wife of S. M and C are daughters of S. T is the daughter of C. How is M related to T?

F is the husband of G. G is the mother of H. H is the wife of I. I is the father of J. How is F related to J?