A, B, C, D, and E are five different colors: Red, Blue, Green, Yellow, and Black. If Red is not Blue, Blue is not Green, and Green is not Yellow, which color is not mentioned as being different from any other?
In a class of five students, P, Q, R, S, and T, P is taller than Q but shorter than R. S is shorter than T but taller than Q. Who is the tallest among them?