Logical Deduction

Among five persons P, Q, R, S and T, T is older than \(\mathrm{P}, \mathrm{Q}\) is younger than \(\mathrm{T}, \mathrm{S}\) is older than \(\mathrm{R}\) and \(\mathrm{P}\) is older than \(\mathrm{S}\) but younger than \(\mathrm{Q}\). Who is the oldest among all?