Please answer the following question: Bernardo Mattarella (September 15 1905 March 1 1971) was an Italian politician for the Christian Democrat party (DC - Democrazia Cristiana). He has been Minister of Italy several times. He was the father of Piersanti Mattarella and Sergio Mattarella who both became politicians as well. 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