Giacomo Signori (11 June 1914 5 February 2005) was an Italian swimmer and water polo player. He won two medals at the 1934 European Aquatics Championships and at least seven national titles in freestyle swimming events.As a water polo player he won three national titles with the Rari Nantes Florentia (1934) Canottieri Olona (1947) and Rari Nantes Camogli (1953) teams. After retiring from competitions he worked as a swimming coach. 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:
Athlete