Complex sentence: Venkataratnam threatens Durga Prasad a lot but does not yield to it, finally Venkataratnam kills Durga Prasad and his wife Lakshmi in front of the court and destroys all the evidences.
Split into simpler sentences: Venkataratnam threatens Durga Prasad a lot who does not yield to it. Finally Venkataratnam kills Durga Prasad and his wife Lakshmi in front of the court and destroys all the evidences.