Q: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. Doreen Sioka -  Doreen Nampiye Sioka (née Matengu 1960–) is a Namibian politician. She is member of the National Assembly of Namibia since 1994 for the South West Africa People's Organization (SWAPO) and a member of the Cabinet since 2005.
A:
Office Holder