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 : Lady Zhen (26 January 183 -- 4 August 221), personal name unknown, was the first wife of Cao Pi, the first ruler of the state of Cao Wei in the Three Kingdoms period.
Answer : Cao Pi

A: What is Lady Zhen's spouse's name?
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Q: Context : The Vetterli rifles were a series of Swiss army service rifles in use from 1869 to circa 1890, when they were replaced with Schmidt--
Answer : 1869

A: What year is Vetterli rifle associated with?
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Q: Context : Down to Their Last Yacht is a 1934 comedy adventure produced and distributed by RKO Pictures.
Answer : RKO Pictures

A:
What production company or companies created Down to Their Last Yacht?
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