Complex sentence: In 1982, he left his position as general manager and soon contested the Gongola gubernatorial race, he won and was governor for three months before the democratic administration was curtailed by a military coup.
Split into simpler sentences: In 1982, he left his position as general manager and soon contested the Gongola gubernatorial race, which he won. Tukur served as governor for three months before the democratic administration was curtailed by a military coup.