If X - Y means X is the daughter of Y, X + Z means X is the brother of Z, and Y × Z means Y is the father of Z, what is the relationship of W if X - W + Y × Z?
In a coded relation, if A + B means A is the father of B, A - B means A is the mother of B, and A × B means A is the son of B, what is the relationship between C and D if C - D + E?