Complex sentence: Jimeno I Garcés was chosen to succeed his kinsman Íñigo Íñiguez Arista as king of Pamplona in 851 or 852.
Split into simpler sentences: Jimeno I Garcés was king of Pamplona in the Ninth century. He was chosen to succeed his kinsman Íñigo Íñiguez Arista as king of Pamplona in 851 or 852.