Answer the following question: Grace Ekpiwhre is career civil servant who retired in 2007. She was appointed by President Umaru Yar'Adua as Nigeria's Minister of Science and Technology in July 2007 and then became Minister of State Works Housing and Urban Development in December 2008. 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