Complex sentence: The Pa'O people are the second largest ethnic group in the Shan State and they also reside in the Kayin State, the Kayah State, the Mon State and the Bago Division.
Split into simpler sentences: The Pa'O people are the second largest ethnic group in the Shan State. They also reside in the Kayin State, the Kayah State, the Mon State and the Bago Division.