Please answer the following question: William Fox (politician) -  Sir William Fox KCMG (1812 – 23 June 1893) was the second Premier of New Zealand on four occasions in the 19th century while New Zealand was still a colony. He was known for his confiscation of Māori land rights his contributions to the education system (such as establishing the University of New Zealand) and his work to increase New Zealand's autonomy from Britain. He has been described as determined and intelligent but also as bitter and too fond of personal attacks. 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?
A:
Office Holder