Complex sentence: Kō Rājakēsarivarman Abaya Kulōthunga Chōla was one of the the greatest kings of the Chola Empire who reigned from 1070 to 1120 C.E. Kulōthunga's long reign was for the best part characterised by unparalleled success.
Split into simpler sentences: Kō Rājakēsarivarman Abaya Kulōthunga Chōla was one of the the greatest kings of the Chola Empire. His long reign (1070 to 1120 C.E) was for the best part characterised by unparalleled success.