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: Clathrosepta becki is a species of sea snail a marine gastropod mollusk in the family Fissurellidae the keyhole limpets.
Question: The document can be classified to which topic? 
Options: 1)NaturalPlace, 2)EducationalInstitution, 3)Film, 4)Animal, 5)Plant
[A]: 4


[Q]: Context: The Sirețel River is a tributary of the Siret River in Romania.
Question: The document can be classified to which topic? 
Options: 1)Company, 2)Film, 3)NaturalPlace, 4)MeanOfTransportation
[A]: 3


[Q]: Context: They Knew Mr. Knight is a 1934 dramatic novel by the British writer Dorothy Whipple.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)NaturalPlace, 3)Building, 4)WrittenWork, 5)Athlete
[A]:
4