Generate a correct and concise answer for the question based on the words in the context.

Input: Consider Input: Context : Alfred Verhulst was a Brigadier General in the United States Air Force.
Question : Which armed forces did Alfred Verhulst serve?

Output: United States Air Force

Input: Consider Input: Context : The Madonna and Child with St John and Angels (c. 1497), also known as The Manchester Madonna, is an unfinished painting attributed to Michelangelo in the National Gallery, London.
Question : What is the name of the place where Manchester Madonna can be found?

Output: National Gallery

Input: Consider Input: 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.
Question : What year did 2S5 Giatsint-S come into use?
Output: 1978