In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

[Q]: Context: The Korean War began and the Navy realized it had a need for an air station in the region Link Information: The Korean War (in South Korean , "Korean War"; in North Korean , "Fatherland Liberation War"; 25 June 1950 – 27 July 1953) Answer: 25 June 1950
[A]: When did the war begin that prompted the Navy to build the airport?


[Q]: Context: His grandfather was Septimus Burt Link Information: he Hon Septimus Burt KC (25 October 1847 – 15 May 1919) Answer: 1847 
[A]: What year was Richard Burt's grandfather born?


[Q]: Context: Gesture recognition using a standard webcam as main gesture sensor was one of their core innovations Link Information: none Answer: none
[A]:
When was the technology that is an innovation of Crunchfish using webcam as a sensor first invented?