Complex sentence: Legend says that Nyai Roro Kidul (Nyai is a Javanese honorific for Madame), the daughter of King Prabu Siliwangi, who was the Queen of the South Sea is supposed to have committed suicide by jumping off the cliff and into the sea.
Split into simpler sentences: Legend says that Nyai Roro Kidul (Nyai is a Javanese honorific for Madame), daughter of King Prabu Siliwangi, is the Queen of the South Sea. She is supposed to have committed suicide by jumping off the cliff and into the sea.