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'.
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Question: Context: The Derg overthrew the Ethiopian Empire and Emperor Haile Selassie in a coup d'état on 12 September 1974, Link Information: Haile Selassie I (, ; born Lij Tafari Makonnen Woldemikael; 23 July 1892 – 27 August 1975) was Crown Prince and Regent of the Ethiopian Empire from 1916 to 1928, and then King and Regent from 1928 to 1930, and finally Emperor from 1930 to 1974. Question: How many years had the Emperor Haile Selassie been in power when the Derg overthrew his rule in 1974?

Answer: Answer: 58


Question: Context: He left to Boston and then rode to Montreal where he arrived near midnight on 30 August 1912 at the Windsor train station on Peel Street and was greeted by William Sutherland Maxwell. Link Information: He left to Boston and then rode to Montreal where he arrived near midnight on 30 August 1912 at the Windsor train station on Peel Street and was greeted by William Sutherland Maxwell. Question: How old was William Sutherland Maxwell when he greeted `Abdu'l-Bahá at the Windsor train station?

Answer: Answer: 38


Question: Context: In 1939, he became headmaster of Chigwell School Link Information: none Question: Who did Robert James succeed in the position of headmaster in 1939?

Answer:
Answer: none