These areas, quartiers sensibles ("sensitive quarters"), are in northern and eastern Paris, namely around its <answer>Goutte d'Or and Belleville</answer> neighbourhoods. To the north of the city they are grouped mainly in the Seine-Saint-Denis department, and to a lesser extreme to the east in the Val-d'Oise department. Other difficult areas are located in the Seine valley, in Évry et Corbeil-Essonnes (Essonne), in Mureaux, Mantes-la-Jolie (Yvelines), and scattered among social housing districts created by Delouvrier's 1961 "ville nouvelle" political initiative.
What two neighborhoods are the centers of the quartiers sensibles?
Goutte d'Or and Belleville