instruction:
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.
question:
Context : Museum August Kestner, previously Kestner-Museum, is a museum in Hanover, Germany, founded in 1889. 
Answer : 1889
answer:
When did Museum August Kestner open?


question:
Context : Antonio Machín (Antonio Abad Lugo Machín; 11 February 1903, in Sagua la Grande, Cuba -- 4 August 1977, in Madrid) was a Cuban singer and musician. 
Answer : 4 August 1977
answer:
The year Antonio Machín died was what?


question:
Context : Tolkien fandom is an international, informal community of fans of the works of J. R. R. Tolkien, especially of the Middle-earth deplorable cultus``. 
Answer : Middle-earth
answer:

The Tolkien fandom is based upon what?