Task: Text Categorization
Input (English): Context: Petr Vasiliev (also Pyotr Vasiliev Uzbek: Пётр Васильев; born April 21 1981) is a retired Uzbekistani swimmer who specialized in freestyle events.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)Plant, 3)Building, 4)Athlete
Output (English): 4