Complex sentence: The Battle of Belach Mugna took place on 13 September 908 between Flann Sinna and Cormac mac Cuilennáin at Bellaghmoon, near Castledermot in the south of modern County Kildare.
Split into simpler sentences: The Battle of Bellaghmoon (old irish: Belach Mugna) took place on 13 September 908. It was fought between the armies of Flann Sinna and Cormac mac Cuilennáin at Bellaghmoon, near Castledermot in the south of modern County Kildare.