Question: Usman Mu'azu was the governor of Kaduna State during the reign of the military leader who became President of Nigeria in what year?
Sentence (from "Usman Mu'azu"): Air Vice-Marshal (retired) Usman Mu'azu (1942–2008) was the military governor of Kaduna State, Nigeria from January 1984 to June 1988 during the military regime of General Muhammadu Buhari.
Relevant evidence: Yes