In a certain code language, A @ B means 'A is the mother of B' A - B means 'A is the brother of B' A % B means 'A is the son of B' A ÷ B means 'A is the father of B' Based on the above, how is E related to M if 'E % F ÷ G - H @ M'?

There are three married couples in a family of three generations. A is the grandson of H; G is the mother-in-law of C; D and E are brothers. B is the only nephew of E. F is the sister-in-law of D. B is the son of C. How is B related to G?

A is the brother of B, B is the daughter of C, and D is the father of A. How is C related to D?