Task: Text Categorization
Input (English): Context: Ma Chul-Jun (Hangul: 마철준; born 6 November 1980) is a South Korean footballer who plays as defender for Gwangju FC in the K League Challenge.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)Animal, 3)EducationalInstitution, 4)NaturalPlace, 5)Athlete
Output (English): 5