Q:Frank Sellick Calder (November 17 1877 - February 4 1943) was an ice hockey executive a journalist and athlete. He is most notable for serving as the first president of the National Hockey League (NHL) from 1917 until his death in 1943. He was the last president of the NHL's predecessor league the National Hockey Association (NHA) and was instrumental in the transition from the NHA to the NHL a transition made to expel a franchise owner. 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?
A:
Office Holder