Question: Harry E. Mitchell (born July 18 1940) is a former U.S. Representative who represented Arizona's 5th congressional district from 2007 until 2011. He is a member of the Democratic Party. 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