Definition: 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.
Input: Context : Production of the definitive version of the Hwasong-5 (''Scud Mod. B'' or ''Scud-B'') began at a slow rate in 1985.
Answer : 1985
Output:
What year did Hwasong-5 come into use?