Detailed Instructions: 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.
Problem:Context : An oil study for The Sorceress (c. 1911, 61x51cm, in a private collection) shows a model with dark brown hair. 
Answer : private collection
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
What is the name of the place where The Sorceress can be found?