Answer the questions based on the information given below. Nine persons F, G, H, I, J, K, L, M and N live in a family of three generations. K is married to H. L is the son of H and sibling of F. F is the mother-in-law of N. G is the only grandchild of H. G is a male member. I is the son of M and father of G. H has two married children. How many male members are there in the family?