Instructions: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Input: Context: While in Aachen, he organized a student group that campaigned against Shah Mohammad Reza Pahlavi. Link Information: Mohammad Reza Pahlavi (, ; 26 October 1919 27 July 1980), also known as Mohammad Reza Shah (), was the last King (Shah) of Iran from 16 September 1941 until his overthrow by the Iranian Revolution on 11 February 1979. Question: How long was Shah Mohammad Reza Pahlavi in power?
Output:
Answer: 37