Please answer the following question: Thomas Griffen -  Thomas Sydney Griffen (19 February 1884 – 1950) was an Australian rugby union player who competed in the 1908 Summer Olympics. Griffin a hooker was born in Sydney New South Wales and claimed a total of six international rugby caps for Australia. 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:
Athlete