Transilien Line N
The trains on this line travel between Gare Montparnasse in Paris and the west of Île-de-France region , with termini in Rambouillet , Dreux and Mantes-la-Jolie . 
<triplet> Paris <subj> Île-de-France <obj> part of <triplet> Île-de-France <subj> Paris <obj> contains administrative territorial entity