Task: Text Categorization
Input (English): Text:  Grobiņa Castle is a medieval castle located in the town of Grobiņa Latvia in western Courland. The ancient Curonian castle hill (Skābāržu kalns) is located only 100 m from the castle. It is supposed to be the famous Seeburg which is mentioned in Scandinavian sources already in ninth century.
Output (English): 7