Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Ratka Živković -  Ratka Živković (Serbian Cyrillic: Ратка Живковић; born 4 January 1975) is a retired Serbian football player. Amongst the teams she played for were Yumco Vranje Mašinac Niš in the Serbian First League Fjölnir and KR in Iceland and Bulgarian Olympia Sofia. She was a member of the Serbia and Montenegro women's national football team.
Answer:
Athlete