Task: Text Categorization
Input (English): Context: USS William Seiverling (DE-441) was a John C. Butler-class destroyer escort acquired by the United States Navy during World War II. The primary purpose of the destroyer escort was to escort and protect ships in convoy in addition to other tasks as assigned such as patrol or radar picket.
Question: The document can be classified to which topic? 
Options: 1)MeanOfTransportation, 2)EducationalInstitution, 3)Film, 4)OfficeHolder, 5)Athlete
Output (English): 1