Complex sentence: Her father, Ioannis Vougiouklakis, was the provincial governor of Arcadia in the Peloponnese during the war, and was executed by the resistance organisation ELAS as a collaborator.
Split into simpler sentences: Her father, Ioannis Vougiouklakis, was the provincial governor of Arcadia in the Peloponnese during the war. He was executed by the resistance organization ELAS as a collaborator.