Complex sentence: The AN/SQQ-89 Undersea Warfare Combat System is a naval anti-submarine warfare (ASW) system for surface warships developed by Lockheed Martin for the United States Navy.
Split into simpler sentences: The AN/SQQ-89 Undersea Warfare Combat System is a naval anti-submarine warfare system for surface warships. The SQQ-89 system was developed by Lockheed Martin for the United States Navy.