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: in November 1973, Link Information: he was the youngest manager in the Football League. Question: How long had the organization Smith became the youngest manager of been around when he set that record?

Answer: Answer: 88


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: Persia's arch-rival was the Roman Empire and its successor, the Byzantine Empire. Link Information: The Roman Empire (, ; ) was the post-Republican period of ancient Rome, consisting of large territorial holdings around the Mediterranean sea in Europe, North Africa and West Asia ruled by emperors. From the accession of Caesar Augustus to the military anarchy of the third century, it was a principate with Italy as metropole of the provinces and its city of Rome as sole capital (27 BC – 286 AD). Question: Which of Persia's arch-rival empires last the longest number of years?

Answer:
Answer: Byzantine Empire



