Complex sentence: The intention of this opening sequence was to parody the premise of the ABC television series "Lost"; however, the sequence reportedly disturbed some viewers because of the Comair Flight 5191 disaster that had occurred earlier in the day.
Split into simpler sentences: The intention of this opening sequence was to parody the premise of the ABC series Lost. However, the sequence reportedly disturbed some viewers because of the Comair Flight 5191 disaster that had occurred earlier in the day.