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 M ÷ N means M is the daughter of N, M + N means M is the son of N, and M - N means M is the sister of N, what is the relationship of O if M ÷ N + O?
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 + B × C?
If A × B means A is the son of B, A - B means A is the father of B, and A + B means A is the daughter of B, what is the relationship of C if A × B - C?