instruction:
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.
question:
Context : Maschenka (Russian: Машенька, Mashen'ka; English: Mary) is a 1987 British film adaptation of the debut novel by Vladimir Nabokov, first published under his pen name V. Sirin in 1926. 
Answer : Mary
answer:
The Maschenka is based upon what?


question:
Context : ISO 3166-2:PN is the entry for the Pitcairn Islands 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
answer:
Who set the standards for ISO 3166-2:PN?


question:
Context : As of 2015, the first three series of Great Continental Railway Journeys have been released on DVD by FremantleMedia under licence from Boundless and the BBC. 
Answer : FremantleMedia
answer:

The production company responsible for Great Continental Railway Journeys is what?