Given the question: William Keir Clark (May 30 1910 November 28 2010) was a Canadian merchant and political figure in Prince Edward Island. After serving as mayor of Montague in 1941 and 1942 he represented 3rd Kings in the Legislative Assembly of Prince Edward Island from 1948 to 1959 and from 1966 to 1970 as a Liberal. In 1970 he sat as an Independent Liberal.He was born in Mount Stewart Prince Edward Island the son of Russell Charles Clark and Marion J. 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?
The answer is:
Office Holder