In a certain code language, 'A @ B' means 'A is the son of B'; 'A % B' means 'A is the daughter of B'; 'A & B' means 'A is the mother of B'; and 'A # B' means 'A is the father of B'. If N % M # R @ L & K, then how is M related to K?

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?