If X - Y means X is the sister of Y, X + Y means X is the brother of Y, and X ÷ Y means X is the mother of Y, what is the relationship of Z if X - Z ÷ Y?
If A ÷ B means A is the son of B, A + B means A is the daughter of B, and A - B means A is the brother of B, what is the relationship of C if A ÷ C + B?
If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + C × B?
If X - Y means X is the sister of Y, X + Y means X is the brother of Y, and X × Y means X is the uncle of Y, what is the relationship of Z if X - Z + Y?
If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + C - B?