Complex sentence: Pierre Carette (born 16 December 1952 in Charleroi, Belgium) was the leader of the Belgian extreme-left terrorist group Communist Combatant Cells or CCC.
Split into simpler sentences: Pierre Carette (born 16 December 1952 in Charleroi, Belgium) is a Belgian terrorist. He was the leader of the Belgian extreme-left terrorist group Communist Combatant Cells or CCC.