Q:Newton D. Baker - Newton Diehl Baker Jr. (December 3 1871 December 25 1937) was an American politician who belonged to the Democratic Party. He served as the 37th mayor of Cleveland Ohio from 1912 to 1915 and as U.S. Secretary of War from 1916 to 1921. 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