Complex sentence: Nagadeepa Purana Viharaya is an ancient Buddhist temple situated in Jaffna district of Northern Province, which is among the sixteen or seventeen holiest Buddhist shrines Solosmasthana in Sri Lanka.
Split into simpler sentences: Nagadeepa Purana Viharaya is an ancient Buddhist temple situated in Jaffna district of Northern Province. It is among the sixteen or seventeen holiest Buddhist shrines ("Solosmasthana") in Sri Lanka.