the town of Kstovo is 22 km southeast of a city that is the capital of which federal district ?
Volga Federal District
Title: Niddatal
Passage: Niddatal is a town in the Wetteraukreis district in Hesse, Germany.  It is located on the Nidda River, 6 km southeast of Friedberg and 22 km northeast of Frankfurt am Main.
Title: Kstovo
Passage: 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.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)
Title: Nizhny Novgorod
Passage: Nizhny Novgorod (Russian: Ни́жний Но́вгород ; ] ), colloquially shortened to Nizhny, is a city in the administrative center (capital) of Volga Federal District and Nizhny Novgorod Oblast in Russia.  From 1932 to 1990, it was known as Gorky (Горький , ] ), after the writer Maxim Gorky, who was born there.  The city is an important economic, transportation, scientific, educational and cultural center in Russia and the vast Volga-Vyatka economic region, and is the main center of river tourism in Russia.  In the historic part of the city there is a large number of universities, theaters, museums and churches.  Nizhny Novgorod is located about 400 km east of Moscow, where the Oka empties into the Volga.  Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)
Kstovo Nizhny Novgorod