Abdullah Abdullah (Pashto/Persian: born September 5 1960) is an Afghan politician and a doctor of medicine. He was an adviser and a close friend of Ahmad Shah Massoud the Northern Alliance leader and commander known as the Lion of Panjshir who was assassinated in September 2001. 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