In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

[Q]: Context: In taxonomy Bolbocoleon is a genus of algae in the family Chaetophoraceae.
Question: The document can be classified to which topic?
Options: 1)Plant, 2)Company, 3)WrittenWork, 4)EducationalInstitution
[A]: 1

[Q]: Context: The Banetsu Monogatari ( Ban'etsu Monogatari) is a locomotive-hauled set of Joyful Train railway coaches operated in Japan by the East Japan Railway Company (JR East) normally between Niigata and Aizu-Wakamatsu.
Question: The document can be classified to which topic?
Options: 1)WrittenWork, 2)EducationalInstitution, 3)Film, 4)MeanOfTransportation
[A]: 4

[Q]: Context: Lower Dock Hill Road Stone Arch Bridge is a historic stone arch bridge located at Cornwall on Hudson in Orange County New York.It was listed on the National Register of Historic Places in 2010.
Question: The document can be classified to which topic?
Options: 1)OfficeHolder, 2)Building, 3)NaturalPlace, 4)MeanOfTransportation, 5)Company
[A]:
2