Please answer the following question: 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. Hans-Dietrich Genscher - Hans-Dietrich Genscher (born 21 March 1927) is a German politician of the liberal Free Democratic Party (FDP). He served as Foreign Minister and Vice Chancellor of Germany from 1974 to 1992 (except for a two-week break in 1982) making him the longest-tenured holder of either post. In 1991 he was the chairman of the Organization for Security and Co-operation in Europe (OSCE).
A:
Office Holder