Ulf Adelsohn (born 4 October 1941) is a Swedish politician leader of the Moderate Party from 1981 to 1986 and Governor of Stockholm County from 1992 to 2001. He was a member of the Riksdag from 1982 to 1988 and served as chairman of SJ AB 20012011 resigning due to quarrels with the government. 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