Answer the questions based on the information given below. Nine members F, G, H, I, J, K, L, M and N are members of a family consisting of three generations and three married couples. J is the only sister of F, who is the son of N. N is the only daughter of K and
L. G is married to the mother of
I. Both N and K have only two children. M is the sister-in-law of H. Who is the grandfather of I?