​Osama and Rishi are best friends. One day, Rishi found out that his mother's only maternal aunt is married to Osama's paternal uncle Zafar. How is Zafar related to Rishi's maternal grandmother? ​

R is the brother of C. C is the brother of A. A is the mother of G. G is the son of H. How is R related to H?

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?