Complex sentence: Sissoko entered the government as minister of justice in December 1984; he held that position until February 1988, when he was appointed as secretary-general of the presidency until the ouster of Moussa Traoré in March 1991, obtaining the rank of Minister in June 1989.
Split into simpler sentences: Sissoko entered the government as Minister of Justice in December 1984; he held that position until February 1988, when he was appointed as Secretary-General of the Presidency. He was Secretary-General of the Presidency until the ouster of Moussa Traoré in March 1991, obtaining the rank of Minister in June 1989.