Complex sentence: The producers, Oliver and Smith, were chastised but defended their position by putting together a 77-page document supporting their side of the story, with testimony from military personnel, which they claim confirms the use of sarin.
Split into simpler sentences: The producers, Oliver and Smith, were chastised but unrepentant. They put together a 77-page document supporting their side of the story, with testimony from military personnel apparently confirming the use of sarin.