Task: Text Categorization
Input (English): Context: USNS Fred C. Ainsworth (T-AP-181) was a troop transport that served with the United States Military Sea Transportation Service during the Korean War. Prior to her MSTS service she served as US Army transport USAT Fred C. Ainsworth during World War II.
Question: The document can be classified to which topic? 
Options: 1)MeanOfTransportation, 2)OfficeHolder, 3)NaturalPlace, 4)Album
Output (English): 1