Task: Text Categorization
Input (English): Context: Sander Thonhauser is a Dutch professional mixed martial artist. He competes in the Heavyweight division. He is a RINGS Holland veteran and has also fought for many other top promotions.His Mixed martial arts debut was on June 29 1997. Sander has not fought since 2005 where he lost to Murad Chunkaiev by submission on April 3 2005.
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)Athlete, 3)EducationalInstitution, 4)Plant, 5)MeanOfTransportation
Output (English): 2