the town of Kstovo is 22 km southeast of a city that is the capital of which federal district ?
Kstovo: Kstovo (Russian: Ксто́во ) is a town and the administrative center of Kstovsky District in Nizhny Novgorod Oblast, Russia, located on the right bank of the Volga River, 22 km southeast of Nizhny Novgorod, the administrative center of the oblast.
i don't know