Cássio Albuquerque dos Anjos simply known as Cássio (born 12 August 1980) is a Brazilian professional footballer who plays for F.C. Arouca in Portugal as a goalkeeper. 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?
Answer:
Athlete