Complex sentence: In 1267--68, the Doge warned the citizens of Split for helping Omiš pirates, in 1271, the pirates looted the ship by Archbishop of Trani, and in 1273, two pirates Stanoj and Saracen looted bishop Kefalinije Henrik.
Split into simpler sentences: In 1267--68, the Doge warned the citizens of Split about helping Omiš pirates. In 1271, the pirates looted the ship by Archbishop of Trani, and in 1273, two pirates Stanoj and Saracen looted bishop Kefalinije Henrik.