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: Consider Input: Context : The Boeing KC-767 is a military aerial refueling and strategic transport aircraft developed from the Boeing 767-200ER. 
Answer : Boeing 767-200ER

Output: The Boeing KC-767 is based upon what?


Input: Consider Input: Context : After graduating with a law doctorate from the University of Vienna, Emanuel Herrmann, the son of the Bezirkshauptmann (district administrator) of Klagenfurt, entered the civil service in the Austrian ministry of commerce and qualified for a university career as a ``Privatdozent'' in the field of national economics. 
Answer : University of Vienna

Output: What university did Emanuel Herrmann attend?


Input: Consider Input: Context : The reviewer for The Times wasn't overly impressed, writing: ``Ealing Studios normally know what they are about, and in an admirably objective programme note they frankly admit that 'Cage of Gold' breaks completely away from what they call their 'semi-documentary' style and is 'emotional melodrama'. 
Answer : Ealing Studios


Output: The production company responsible for Cage of Gold is what?