Complex sentence: Prabawo immediately launched another helicoper assault, codenamed Operation Cenderawasih (Bird of Paradise) which resulted in the safe release of nine of the hostages, two of the Indonesian hostages having been killed during the course of the operation.
Split into simpler sentences: Prabawo immediately launched another helicoper assault, code-named Operation Cenderawasih (Bird of Paradise). This operation resulted in the safe release of nine of the hostages, two of the Indonesian hostages having been killed during the course of the operation.