Please answer the following question: Betsy Johnson (Oregon politician) - Elizabeth Betsy Johnson (born c. 1950) is an American politician in the state of Oregon. A Democrat she is serving her second term in the Oregon State Senate representing the 16th Senate District which includes the cities of Tillamook Astoria St. Helens and Seaside. Johnson previously served in the Oregon House of Representatives.She began serving in the Senate in January 2005 initially being appointed to succeed Joan Dukes who had vacated the seat to take another position. 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