Complex sentence: Invoking of blessings starts with a week long Pirith chanting, which is followed by the processions that parade in the neighborhood of Bellanwila during the nights of Esala festival.
Split into simpler sentences: Invoking of blessings starts with a week long Pirith chanting. This is followed by the processions that parade in the neighborhood of Bellanwila in the nights of Esala festival.