Complex sentence: He became UNITA's Vice President in 1992 when the Angolan Civil War resumed, succeeding Jeremias Chitunda, who was assasinated by the Angolan government in 1992.
Split into simpler sentences: He became UNITA's Vice President in 1992 when the Angolan Civil War resumed. Dembo succeeded Jeremias Chitunda, who was killed by the Angolan government in 1992.