Definition: 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.
Input: Context : The architectural contest for the Palace of the Soviets (1931--1933) was won by Boris Iofan's neoclassical concept, subsequently revised by Iofan, Vladimir Shchuko and Vladimir Gelfreikh into a skyscraper.
Answer : Boris Iofan
Output:
Who was behind the creation of Palace of the Soviets?