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 : Charles-Theodore Millot (28 June 1829 -- 17 May 1889) was a French general who distinguished himself in the Franco-Prussian War (1870--71) and the Tonkin campaign (1883--86).
Answer : Franco-Prussian War

A: In what war did Charles-Theodore Millot fight?
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Q: Context : Gelnhausen railway (Hungen--Gieen) was opened on 29 December 1869 and Hungen station went into operation.
Answer : 29 December 1869

A: When was Hungen station opened?
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Q: Context : Iota Herculis ( Her, Herculis) is a fourth-magnitude star in the constellation Hercules.
Answer : Hercules

A:
The star Iota Herculis is part of what constellation?
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