Direction: Read the given information and answer the following questions:

Eight persons P, Q, R, S, T, U, V and W work in the locomotive department of railways. Each person has a designation in the order of precedence i.e., Director, Principal, Vice Principal (VP), Senior Teacher (ST), Teacher, Assistant Teacher (AT), Librarian and Assistant Librarian (AL). The positions of their designations in descending order are mentioned above such that Director is the senior most position while Assistant Librarian is the lower most position. Q is three designations senior to R who is an immediate junior to P. Two persons hold their designation between V and P. As many persons are junior to Q is the same as senior to S. U is senior to W but not senior to T. U and V are not on immediate nearby designation in the provided order.