Q:Henri de Brouckere - Jonkheer Henri Ghislain Joseph Marie Hyacinthe de Brouckere (25 January 1801 Bruges 25 January 1891) was a Belgian nobleman and liberal politician. Born in Bruges he was a magistrate and a professor at the Universite Libre de Bruxelles. His brother Charles was mayor of Brussels.He served as governor of Antwerp from 1840 to 1844 and of Liege from 1844 to 1846. He headed a Liberal government from 1852 to 1855 as the ninth Prime Minister. In 1863 he became the first mayor of Auderghem. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Office Holder