Please answer the following question: Stewart MacDonald is a Scottish Labour Party local government councillor. He was elected to the East Kirkintilloch and Twechar Ward of East Dunbartonshire Council in the 2007 election. Stewart MacDonald is also a member of Kirkintilloch Community Council and the Bridgeton Burns Club.He is a director of the East Dunbartonshire Municipal Bank and the East Dunbartonshire Leisure Trust. 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