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

Ex Input:
Context : The M-63 Plamen (English: Flame) is a 128mm multiple rocket launcher developed in 1963 in Yugoslavia for use in the Yugoslav People's Army. 
Question : What year was M-63 Plamen commissioned?

Ex Output:
1963


Ex Input:
Context : María Elena Perla López Loyo (born 2 April 1951) is a Mexican politician from the Institutional Revolutionary Party. 
Question : What kind of  occupation does Perla López Loyo have?

Ex Output:
politician


Ex Input:
Context : The Type 97 motorcycle, or Rikuo, was a copy of a Harley-Davidson motorcycle produced from 1935 in Japan under license from Harley-Davidson by the Sankyo Company (later Rikuo Nainen Company). 
Question : What was the year Type 97 motorcycle entered service?

Ex Output:

1935