How many persons sit between Y and the one who faces R?

Study the following information carefully and answer the questions given below. Twelve persons are sitting in two parallel rows. The persons in row 1 - P, R, T, V, X, and Z are facing towards south and the persons in row 2 - Q, S, U, W, Y, and A are facing towards north, but not necessarily in the same order. The person, who faces R, sits third to the right of Q. Only one person sits between Q and W. V sits second to the right of P, where neither of them faces Q nor sits on the extreme ends of the row. S sits on the extreme end of the row but doesn’t face R. Only one person sits between A and U, who neither sits adjacent to S nor Q. Z sits to the right of X but neither faces S and A nor sits on the extreme ends of the row.