Complex sentence: When Candie's mourners return from his funeral, Django guns down Candie's remaining henchmen and his sister Lara, releases the house servants, and kneecaps Stephen.
Split into simpler sentences: When Candie's mourners return from his funeral, Django guns down Candie's remaining henchmen. He then kills Candie's sister Lara, releases the house servants, and kneecaps Stephen.