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 : Tan Yuling (1920 -- 14 August 1942), born Tatara Yuling, was a concubine of China's last emperor Puyi.
Answer : Puyi
answer:
What is Tan Yuling's spouse's name?

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 : The Davidka (Yiddish: , ''Little David'') was a homemade Israeli mortar used in Safed and Jerusalem during the early stages of the 1948 Israeli War of Independence.
Answer : 1948
answer:
What was the year Davidka entered service?