Please answer the following question: William J. Lippert commonly known as Bill Lippert is a legislator and gay rights activist from the U.S. state of Vermont who has served since 1994 in the Vermont House of Representatives as a representative of the Chittenden-1-1 House district in Hinesburg. He serves as chairman of the House Judiciary Committee. 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