Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

[Q]: Context : Káťa Kabanová (also known in various spellings including Katia, Katja, Katya, and Kabanowa) is an opera in three acts, with music by Leoš Janáček to a libretto by Vincenc Červinka, based on The Storm, a play by Alexander Ostrovsky. 
Answer : The Storm
[A]: The Káťa Kabanová is based upon what?


[Q]: Context : Essent is part of RWE AG. Essent has 2.3 million customers for electricity and about 2.0 million for gas. 
Answer : RWE
[A]: Which company is the parent company of Essent?


[Q]: Context : Pokémon Gold and Silver are set in the region of Johto, situated to the west of the Kanto region from the previous Red and Blue games, and three years after the conclusion of the previous games. 
Answer : Kanto
[A]:
Which place does Pokémon Gold and Silver exist in?