William N. Brownsberger (born March 21 1957) is an American state legislator who serves in the Massachusetts Senate representing the Second Suffolk and Middlesex District which includes his hometown of Belmont as well as Watertown and parts of Allston Brighton Fenway-Kenmore and Back Bay which are neighborhoods of Boston. From 2007 to 2012 he was a member of the Massachusetts House of Representatives. 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?
Answer:
Office Holder