Complex sentence: The Oraon Adivasi followed the'Sarna' Dharam (Sarna religion) which has tenets similar to Hindu religion, some of the groups started following Sarna in Hindu style, as Bishnu Bhagats, Bacchinda Bhagats, Karmu Bhagats and Tana Bhagats.
Split into simpler sentences: The Oraon Adivasi followed the'Sarna' Dharam (Sarna religion) which has tenets similar to Hindu religion. Some of the groups started following Sarna in Hindu style, as Bishnu Bhagats, Bacchinda Bhagats, Karmu Bhagats and Tana Bhagats.