Definition: In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Input: 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

4