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.

[Q]: Context : Otto Preminger died in New York City, New York in 1986, aged 80, from lung cancer while suffering from Alzheimer's disease. 
Answer : Alzheimer's disease
[A]: What led to Otto Preminger's death?


[Q]: Context : John Bardeen (May 23, 1908 -- January 30, 1991) was an American physicist and electrical engineer, the only person to have won the Nobel Prize in Physics twice: first in 1956 with William Shockley and Walter Brattain for the invention of the transistor; and again in 1972 with Leon N Cooper and John Robert Schrieffer for a fundamental theory of conventional superconductivity known as the BCS theory. 
Answer : Nobel Prize in Physics
[A]: Which award was honoured to John Bardeen?


[Q]: Context : Empress Xiaozhaoren (Manchu: Hiyoošungga Genggiyen Gosin Hūwanghu; 1653 -- 18 March 1678) was the second empress consort of the Kangxi Emperor of the Qing Dynasty. 
Answer : Kangxi Emperor
[A]:
What is Empress Xiaozhaoren's spouse's name?