Complex sentence: Berri again served as a Cabinet minister from 1989 to 1992, and he was elected speaker of the National Assembly on 20 November 1992 at the head of the "Liberation of the South Movement" list.
Split into simpler sentences: Berri again served as a Cabinet minister from 1989 to 1992. He became elected speaker of the National Assembly on 20 November 1992 at the head of the "Liberation of the South Movement" list.