In a circular seating arrangement, A is sitting to the immediate right of B, who is sitting to the immediate left of C. If D is sitting opposite A, who is sitting to the immediate left of D?
Five friends, P, Q, R, S, and T, are sitting in a row. P is to the left of Q but to the right of R. S is sitting at one of the ends. T is not at the ends. Who is sitting in the middle?