Four of the following five are alike in a certain way and hence form a group. Who among the following one who does not belong to that group?

We have,   V sits second to the left of T, Two persons are sitting between T and U, R and U are sitting adjacent to each other,  From the above condition, there are three possibilities. Again we have, The number of persons sitting between T and R is the same as between T and S From the above condition case-1 gets eliminated. Again we have, Q sits exactly in the middle of P and R, R sits fifth to the left of S, P does not sits third to the right of U. Not more than one person sits between Q and R. From the above condition case-2 gets eliminated. Case-1a shows the final arrangement.