Complex sentence: In 1981 NWPO had a party split and two separate NWPOs came into existence: one NWPO led by Rohit (which later took the name NWPP) and one NWPO led by Hareram Sharma.
Split into simpler sentences: In 1981 NWPO had a party split and two separate NWPOs came into existence. One NWPO led by Rohit (which later took the name NWPP) and one NWPO led by Hareram Sharma.