Q:John Duncan Anderson AO (born 14 November 1956) is a former Australian politician. He served as the Deputy Prime Minister of Australia and Leader of the rural-based National Party of Australia from July 1999 to July 2005. 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