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

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?
1977

Context : The Smothers Brothers Comedy Hour was an American comedy and variety show television series hosted by the Smothers Brothers and initially airing on CBS from 1967 to 1969. 
Question : What is the original channel that The Smothers Brothers Comedy Hour played on?
CBS

Context : Seymour Ginsburg received his B.S. from City College of New York in 1948, where along with fellow student Martin Davis he attended an honors mathematics class taught by Emil Post. 
Question : Where did Seymour Ginsburg study or work?

City College of New York