A & B means 'A is the wife of B'
A # B means 'A is the father of B'
A @ B means 'A is the son B'
A % B means 'A is the husband of B'
A + B means 'A is the mother of B'
If A & B # C & D @ E % F + G, then how is D related to G?
1
Brother
2
Father
3
Son
4
Son-in-law