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

[Q]: Context : The ESO 3.6 m Telescope is an optical reflecting telescope run by the European Southern Observatory at La Silla Observatory, Chile since 1977, with a clear aperture of about 3.6 metres (140 in) and 8.6 m2 (93 sq ft) area. 
Question : In which year was the service entry date for ESO 3.6 m Telescope?
[A]: 1977


[Q]: Context : The Mark 10 torpedo was a torpedo put into use by the United States in 1915. 
Question : In what year did Mark 10 torpedo enter service?
[A]: 1915


[Q]: Context : The 9×19mm MP 3008 (Maschinenpistole 3008 or ``machine pistol 3008'', also Volks-MP.3008 and Gerät Neumünster) was a German substitute standard submachine gun manufactured toward the end of World War II in early 1945. 
Question : In which year was the service entry date for MP 3008?
[A]:
1945