Complex sentence: Festivals in Nileshwaram are Pooram and Kalasam in Mannampurathukavu, the festival in Thaliyil temple and Karhikolsavam and Poorolsavam in Pallikkara Bhagavathi Temple.
Split into simpler sentences: Festivals in Nileshwaram are Pooram and Kalasam in Mannampurathukavu and the festival in Thaliyil temple. Another important festivals in Nileshwaram are Karhikolsavam and Poorolsavam in Pallikkara Bhagavathi Temple.