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.

[EX Q]: Context : Preparing for a Fancy Dress Ball, also known as The Misses Williams-Wynn, is a 173 by 150 cm (68 by 59 in) oil on canvas by English artist William Etty, first exhibited in 1835 and currently in the York Art Gallery. 
Answer : York Art Gallery
[EX A]: What is the name of the place where Preparing for a Fancy Dress Ball can be found?

[EX Q]: Context : ISO 3166-2:VE is the entry for Venezuela in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Answer : International Organization for Standardization
[EX A]: Who set the standards for ISO 3166-2:VE?

[EX Q]: Context : Mainova AG was formed in 1998 through the merger of Stadtwerke Frankfurt am Main GmbH and Maingas AG. 
Answer : Stadtwerke Frankfurt
[EX A]:
What is Mainova's parent company?