Given the question: Abd al-Khaliq al-Samarra'i - Abd al-Khaliq al-Samarra'i (Arabic: ) was an Iraqi Ba'athist politician and leading member of the Arab Socialist Ba'ath Party in Iraq. He was a member of the Regional Command from 1964 to 1973 when he was expelled. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Office Holder