In a certain code language, 'A ~ B' means 'A is the brother of B', 'A * B' means 'A is the daughter of B', 'A ? B' means 'A is the father of B', and 'A > B' means 'A is the wife of B'. How is S related to T in the expression 'S * I ~ G > H ? T'?

Pankaj (Male) pointed to a girl and said, 'Her paternal grandfather's only son's wife is my mother.' What is Pankaj's relation to that girl?

A + B means 'A is the wife of B'; A - B means 'B is the daughter of A'; A × B means 'B is the brother of A'; A ÷ B means 'A is the father of B'. If P + R × T - Q + S ÷ U, then how is P related to the mother of U?