P, Q, R, S, T, V and W were travelling in three different vehicles. There are at least two passengers in each vehicle-I, II and III and one of them is a lady. There are two engineers, two doctors and three teachers among them. R is a lady doctor and she does not travel with the pair of sisters P and V. Q, a male engineer travels with only W, a teacher in vehicle I. S is a male doctor. Two persons belonging to same profession do not travel in the same vehicle. P is not an engineer and travels in vehicle II.