Complex sentence: The National United Party was founded in 1966 on April 24 by Haykaz Khachatryan, Stephan Zatikyan and Shahen Harutyunyan.
Split into simpler sentences: The National United Party was founded in 1966 on April 24. NUP's three founders were Haykaz Khachatryan, Stephan Zatikyan and Shahen Harutyunyan.