Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Ma Hongbin - Ma Hongbin (September 14 1884October 21 1960) was a prominent Chinese Muslim warlord active mainly during the Republican era and was part of the Ma clique. He was the acting Chairman of Gansu and Ningxia Provinces for a short period.
Office Holder