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 : NordStar was founded by Norilsk Nickel and was launched on 17 December 2008, based on local Taimyr Peninsula airlines. 
Answer : Norilsk Nickel

Output: Which company is the parent company of NordStar?


Input: Consider Input: Context : Arnošt Kreuz (or Ernst Kreuz, 9 May 1912 -- 9 February 1974), was a Czech football forward of German origin who played for Czechoslovakia in the 1938 FIFA World Cup. 
Answer : 9 February 1974

Output: What was the death date of Arnošt Kreuz?


Input: Consider Input: Context : Sarah Fairbrother (calling herself Louisa and known from 1859 as Mrs FitzGeorge; 31 October 1816 -- 12 January 1890) was an English actress and the mistress of Prince George, Duke of Cambridge, a male-line grandson of George III. As the couple married in contravention of the Royal Marriages Act 1772, their marriage was not recognized under the law. 
Answer : Prince George, Duke of Cambridge


Output: What is Sarah Fairbrother's spouse's name?