Directions:- Study the following information carefully to answer the question given below.
L, M, N, O, P, Q, R and S are sitting around a circular table facing the centre but not necessarily in the same order.
• P sits third to the left of M. P is an immediate neighbour of both O and S.
• Only one person sits between O and Q.
• R is an immediate neighbour of O. Only one person sits between R and N.
Four of the following five are alike in a certain way and thus form a group. Which is the one that does not belong to that group?