Complex sentence: The Khalsa Raj Party is a political party in Punjab; was formed by Dr. Jagjit Singh Chohan (who returned to Punjab after living in exile in UK for 21 years).
Split into simpler sentences: The Khalsa Raj Party is a political party in Punjab. It was formed by Dr. Jagjit Singh Chohan (who returned to Punjab after living in exile in the United Kingdom for 21 years).