Task: Text Categorization
Input (English): Context: Greatest Hits is a hits compilation released by British singer-songwriter Robbie Williams on 18 October 2004. The album includes two new songs these being Radio and Misunderstood which were both released as singles. The album is his seventh overall released in the United Kingdom. It was one of the fastest selling albums upon release in the country where it debuted at the number-one spot with first week sales of over 320000 copies.
Question: The document can be classified to which topic? 
Options: 1)Building, 2)Album, 3)MeanOfTransportation, 4)EducationalInstitution
Output (English): 2