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.
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Question: Context : Høje Taastrup station is a railway station in Høje-Taastrup municipality, Denmark, opened on 31 May 1986. 
Answer : 1986

Answer: When was Høje Taastrup station founded?


Question: Context : The Power of the Daleks is the completely missing third serial of the fourth season in the British science fiction television series Doctor Who, which was first broadcast in six weekly parts from 5 November to 10 December 1966. 
Answer : Doctor Who

Answer: What is the series that The Power of the Daleks is a part of?


Question: Context : The Sinclair President is a calculator released by Sinclair Radionics in early 1978. 
Answer : 1978

Answer:
Which was the official year for the approval of Sinclair President?