Please answer the following question: Phineas J. Stone - Phineas Jones Stone (May 23 1810-August 12 1891) was a Massachusetts politician who served as a member of the Massachusetts House of Representatives as a member of the Board of Selectmen for the Town of Charlestown Massachusetts as a member of and president of the Common Council and as the seventh mayor of the City of Charlestown Massachusetts. 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?
Answer:
Office Holder