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 : Production of the 2S5 Giatsint-S started in 1976 along with the towed version the 2A36 Giatsint-B. It was introduced into service in 1978 and has also been known as the M1981 by the United States.
Answer : 1978

Answer: What year did 2S5 Giatsint-S come into use?

Question: Context : The 1982 El Salvador earthquake occurred on 19 June 1982 at 00:21 local time (06:21 UTC).
Answer : 19 June 1982

Answer: When did 1982 El Salvador earthquake occurr?

Question: Context : John Relyea is a 1998 graduate of the Curtis Institute of Music in Philadelphia.
Answer : Curtis Institute of Music

Answer:
The college John Relyea attended was what?