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.

[EX Q]: Context : In 1990, Top Hat was selected for preservation in the United States National Film Registry by the Library of Congress as being ``culturally, historically, or aesthetically significant''. 
Answer : National Film Registry
[EX A]: What award was received by Top Hat?

[EX Q]: Context : In 1946, Alain de Boissieu married Élisabeth de Gaulle, the daughter of general Charles de Gaulle. 
Answer : Élisabeth de Gaulle
[EX A]: What is Alain de Boissieu's spouse's name?

[EX Q]: Context : George Akropolites, Latinized as Acropolites or Acropolita (Greek: Γεῶργιος Ἀκροπολίτης, Georgios Akropolitês, 1217 or 1220 -- 1282), was a Byzantine Greek historian and statesman born at Constantinople. 
Answer : 1282
[EX A]:
On what date did George Akropolites expire?