Q:Mario Zagari (born 14 September 1913 29 February 1996) was an Italian socialist politician who served in the Italian parliament and in the European parliament as well as in the Italian governments in various capacities. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Office Holder