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 : Essent is part of RWE AG. Essent has 2.3 million customers for electricity and about 2.0 million for gas. 
Answer : RWE
[EX A]: Which company is the parent company of Essent?

[EX Q]: Context : 102 Herculis (102 Her) is a star in the constellation Hercules. 
Answer : Hercules
[EX A]: What constellation is 102 Herculis a part of?

[EX 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
[EX A]:
What year is Vetterli rifle associated with?